model_brush.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "polygon.h"
  25 #include "curves.h"
  26 #include "wad.h"
  27
  28
  29 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
  30 cvar_t halflifebsp = {0, "halflifebsp", "0", "indicates the current map is hlbsp format (useful to know because of different bounding box sizes)"};
  31 cvar_t mcbsp = {0, "mcbsp", "0", "indicates the current map is mcbsp format (useful to know because of different bounding box sizes)"};
  32 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  33 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1", "whether to use RGBA (32bit) or RGB (24bit) lightmaps"};
  34 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
  35 cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
  36 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  37 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  38 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  39 cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
  40 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  41 cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  42 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  43 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  44 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  45 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  46 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  47
  48 static texture_t mod_q1bsp_texture_solid;
  49 static texture_t mod_q1bsp_texture_sky;
  50 static texture_t mod_q1bsp_texture_lava;
  51 static texture_t mod_q1bsp_texture_slime;
  52 static texture_t mod_q1bsp_texture_water;
  53
  54 void Mod_BrushInit(void)
  55 {
  56 //      Cvar_RegisterVariable(&r_subdivide_size);
  57         Cvar_RegisterVariable(&halflifebsp);
  58         Cvar_RegisterVariable(&mcbsp);
  59         Cvar_RegisterVariable(&r_novis);
  60         Cvar_RegisterVariable(&r_lightmaprgba);
  61         Cvar_RegisterVariable(&r_nosurftextures);
  62         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  63         Cvar_RegisterVariable(&r_subdivisions_mintess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  65         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  69         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  70         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  71         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  72         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  73         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  74
  75         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  76         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  77         mod_q1bsp_texture_solid.surfaceflags = 0;
  78         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  79
  80         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  81         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  82         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  83         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  84
  85         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  86         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  87         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  88         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  89
  90         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  91         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  92         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  93         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  94
  95         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  96         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  97         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  98         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
  99 }
 100
 101 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 102 {
 103         mnode_t *node;
 104
 105         if (model == NULL)
 106                 return NULL;
 107
 108         // LordHavoc: modified to start at first clip node,
 109         // in other words: first node of the (sub)model
 110         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 111         while (node->plane)
 112                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 113
 114         return (mleaf_t *)node;
 115 }
 116
 117 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 118 {
 119         int i;
 120         mleaf_t *leaf;
 121         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 122         if (leaf)
 123         {
 124                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 125                 if (i)
 126                 {
 127                         memcpy(out, leaf->ambient_sound_level, i);
 128                         out += i;
 129                         outsize -= i;
 130                 }
 131         }
 132         if (outsize)
 133                 memset(out, 0, outsize);
 134 }
 135
 136 static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 137 {
 138         int numclusters = 0;
 139         int nodestackindex = 0;
 140         mnode_t *node, *nodestack[1024];
 141         if (!model->brush.num_pvsclusters)
 142                 return -1;
 143         node = model->brush.data_nodes;
 144         for (;;)
 145         {
 146 #if 1
 147                 if (node->plane)
 148                 {
 149                         // node - recurse down the BSP tree
 150                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 151                         if (sides < 3)
 152                         {
 153                                 if (sides == 0)
 154                                         return -1; // ERROR: NAN bounding box!
 155                                 // box is on one side of plane, take that path
 156                                 node = node->children[sides-1];
 157                         }
 158                         else
 159                         {
 160                                 // box crosses plane, take one path and remember the other
 161                                 if (nodestackindex < 1024)
 162                                         nodestack[nodestackindex++] = node->children[0];
 163                                 node = node->children[1];
 164                         }
 165                         continue;
 166                 }
 167                 else
 168                 {
 169                         // leaf - add clusterindex to list
 170                         if (numclusters < maxclusters)
 171                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 172                         numclusters++;
 173                 }
 174 #else
 175                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 176                 {
 177                         if (node->plane)
 178                         {
 179                                 if (nodestackindex < 1024)
 180                                         nodestack[nodestackindex++] = node->children[0];
 181                                 node = node->children[1];
 182                                 continue;
 183                         }
 184                         else
 185                         {
 186                                 // leaf - add clusterindex to list
 187                                 if (numclusters < maxclusters)
 188                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 189                                 numclusters++;
 190                         }
 191                 }
 192 #endif
 193                 // try another path we didn't take earlier
 194                 if (nodestackindex == 0)
 195                         break;
 196                 node = nodestack[--nodestackindex];
 197         }
 198         // return number of clusters found (even if more than the maxclusters)
 199         return numclusters;
 200 }
 201
 202 static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 203 {
 204         int nodestackindex = 0;
 205         mnode_t *node, *nodestack[1024];
 206         if (!model->brush.num_pvsclusters)
 207                 return true;
 208         node = model->brush.data_nodes;
 209         for (;;)
 210         {
 211 #if 1
 212                 if (node->plane)
 213                 {
 214                         // node - recurse down the BSP tree
 215                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 216                         if (sides < 3)
 217                         {
 218                                 if (sides == 0)
 219                                         return -1; // ERROR: NAN bounding box!
 220                                 // box is on one side of plane, take that path
 221                                 node = node->children[sides-1];
 222                         }
 223                         else
 224                         {
 225                                 // box crosses plane, take one path and remember the other
 226                                 if (nodestackindex < 1024)
 227                                         nodestack[nodestackindex++] = node->children[0];
 228                                 node = node->children[1];
 229                         }
 230                         continue;
 231                 }
 232                 else
 233                 {
 234                         // leaf - check cluster bit
 235                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 236                         if (CHECKPVSBIT(pvs, clusterindex))
 237                         {
 238                                 // it is visible, return immediately with the news
 239                                 return true;
 240                         }
 241                 }
 242 #else
 243                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 244                 {
 245                         if (node->plane)
 246                         {
 247                                 if (nodestackindex < 1024)
 248                                         nodestack[nodestackindex++] = node->children[0];
 249                                 node = node->children[1];
 250                                 continue;
 251                         }
 252                         else
 253                         {
 254                                 // leaf - check cluster bit
 255                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 256                                 if (CHECKPVSBIT(pvs, clusterindex))
 257                                 {
 258                                         // it is visible, return immediately with the news
 259                                         return true;
 260                                 }
 261                         }
 262                 }
 263 #endif
 264                 // nothing to see here, try another path we didn't take earlier
 265                 if (nodestackindex == 0)
 266                         break;
 267                 node = nodestack[--nodestackindex];
 268         }
 269         // it is not visible
 270         return false;
 271 }
 272
 273 static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 274 {
 275         int nodestackindex = 0;
 276         mnode_t *node, *nodestack[1024];
 277         if (!model->brush.num_leafs)
 278                 return true;
 279         node = model->brush.data_nodes;
 280         for (;;)
 281         {
 282 #if 1
 283                 if (node->plane)
 284                 {
 285                         // node - recurse down the BSP tree
 286                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 287                         if (sides < 3)
 288                         {
 289                                 if (sides == 0)
 290                                         return -1; // ERROR: NAN bounding box!
 291                                 // box is on one side of plane, take that path
 292                                 node = node->children[sides-1];
 293                         }
 294                         else
 295                         {
 296                                 // box crosses plane, take one path and remember the other
 297                                 if (nodestackindex < 1024)
 298                                         nodestack[nodestackindex++] = node->children[0];
 299                                 node = node->children[1];
 300                         }
 301                         continue;
 302                 }
 303                 else
 304                 {
 305                         // leaf - check cluster bit
 306                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 307                         if (CHECKPVSBIT(pvs, clusterindex))
 308                         {
 309                                 // it is visible, return immediately with the news
 310                                 return true;
 311                         }
 312                 }
 313 #else
 314                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 315                 {
 316                         if (node->plane)
 317                         {
 318                                 if (nodestackindex < 1024)
 319                                         nodestack[nodestackindex++] = node->children[0];
 320                                 node = node->children[1];
 321                                 continue;
 322                         }
 323                         else
 324                         {
 325                                 // leaf - check cluster bit
 326                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 327                                 if (CHECKPVSBIT(pvs, clusterindex))
 328                                 {
 329                                         // it is visible, return immediately with the news
 330                                         return true;
 331                                 }
 332                         }
 333                 }
 334 #endif
 335                 // nothing to see here, try another path we didn't take earlier
 336                 if (nodestackindex == 0)
 337                         break;
 338                 node = nodestack[--nodestackindex];
 339         }
 340         // it is not visible
 341         return false;
 342 }
 343
 344 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 345 {
 346         int nodestackindex = 0;
 347         mnode_t *node, *nodestack[1024];
 348         if (!model->brush.num_leafs)
 349                 return true;
 350         node = model->brush.data_nodes;
 351         for (;;)
 352         {
 353 #if 1
 354                 if (node->plane)
 355                 {
 356                         // node - recurse down the BSP tree
 357                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 358                         if (sides < 3)
 359                         {
 360                                 if (sides == 0)
 361                                         return -1; // ERROR: NAN bounding box!
 362                                 // box is on one side of plane, take that path
 363                                 node = node->children[sides-1];
 364                         }
 365                         else
 366                         {
 367                                 // box crosses plane, take one path and remember the other
 368                                 if (nodestackindex < 1024)
 369                                         nodestack[nodestackindex++] = node->children[0];
 370                                 node = node->children[1];
 371                         }
 372                         continue;
 373                 }
 374                 else
 375                 {
 376                         // leaf - check if it is visible
 377                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 378                         {
 379                                 // it is visible, return immediately with the news
 380                                 return true;
 381                         }
 382                 }
 383 #else
 384                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 385                 {
 386                         if (node->plane)
 387                         {
 388                                 if (nodestackindex < 1024)
 389                                         nodestack[nodestackindex++] = node->children[0];
 390                                 node = node->children[1];
 391                                 continue;
 392                         }
 393                         else
 394                         {
 395                                 // leaf - check if it is visible
 396                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 397                                 {
 398                                         // it is visible, return immediately with the news
 399                                         return true;
 400                                 }
 401                         }
 402                 }
 403 #endif
 404                 // nothing to see here, try another path we didn't take earlier
 405                 if (nodestackindex == 0)
 406                         break;
 407                 node = nodestack[--nodestackindex];
 408         }
 409         // it is not visible
 410         return false;
 411 }
 412
 413 typedef struct findnonsolidlocationinfo_s
 414 {
 415         vec3_t center;
 416         vec_t radius;
 417         vec3_t nudge;
 418         vec_t bestdist;
 419         model_t *model;
 420 }
 421 findnonsolidlocationinfo_t;
 422
 423 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 424 {
 425         int i, surfacenum, k, *tri, *mark;
 426         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 427         msurface_t *surface;
 428         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 429         {
 430                 surface = info->model->data_surfaces + *mark;
 431                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 432                 {
 433                         for (k = 0;k < surface->num_triangles;k++)
 434                         {
 435                                 tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 436                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 437                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 438                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 439                                 VectorSubtract(vert[1], vert[0], edge[0]);
 440                                 VectorSubtract(vert[2], vert[1], edge[1]);
 441                                 CrossProduct(edge[1], edge[0], facenormal);
 442                                 if (facenormal[0] || facenormal[1] || facenormal[2])
 443                                 {
 444                                         VectorNormalize(facenormal);
 445                                         f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 446                                         if (f <= info->bestdist && f >= -info->bestdist)
 447                                         {
 448                                                 VectorSubtract(vert[0], vert[2], edge[2]);
 449                                                 VectorNormalize(edge[0]);
 450                                                 VectorNormalize(edge[1]);
 451                                                 VectorNormalize(edge[2]);
 452                                                 CrossProduct(facenormal, edge[0], edgenormal[0]);
 453                                                 CrossProduct(facenormal, edge[1], edgenormal[1]);
 454                                                 CrossProduct(facenormal, edge[2], edgenormal[2]);
 455                                                 // face distance
 456                                                 if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 457                                                  && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 458                                                  && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 459                                                 {
 460                                                         // we got lucky, the center is within the face
 461                                                         dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 462                                                         if (dist < 0)
 463                                                         {
 464                                                                 dist = -dist;
 465                                                                 if (info->bestdist > dist)
 466                                                                 {
 467                                                                         info->bestdist = dist;
 468                                                                         VectorScale(facenormal, (info->radius - -dist), info->nudge);
 469                                                                 }
 470                                                         }
 471                                                         else
 472                                                         {
 473                                                                 if (info->bestdist > dist)
 474                                                                 {
 475                                                                         info->bestdist = dist;
 476                                                                         VectorScale(facenormal, (info->radius - dist), info->nudge);
 477                                                                 }
 478                                                         }
 479                                                 }
 480                                                 else
 481                                                 {
 482                                                         // check which edge or vertex the center is nearest
 483                                                         for (i = 0;i < 3;i++)
 484                                                         {
 485                                                                 f = DotProduct(info->center, edge[i]);
 486                                                                 if (f >= DotProduct(vert[0], edge[i])
 487                                                                  && f <= DotProduct(vert[1], edge[i]))
 488                                                                 {
 489                                                                         // on edge
 490                                                                         VectorMA(info->center, -f, edge[i], point);
 491                                                                         dist = sqrt(DotProduct(point, point));
 492                                                                         if (info->bestdist > dist)
 493                                                                         {
 494                                                                                 info->bestdist = dist;
 495                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 496                                                                         }
 497                                                                         // skip both vertex checks
 498                                                                         // (both are further away than this edge)
 499                                                                         i++;
 500                                                                 }
 501                                                                 else
 502                                                                 {
 503                                                                         // not on edge, check first vertex of edge
 504                                                                         VectorSubtract(info->center, vert[i], point);
 505                                                                         dist = sqrt(DotProduct(point, point));
 506                                                                         if (info->bestdist > dist)
 507                                                                         {
 508                                                                                 info->bestdist = dist;
 509                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 510                                                                         }
 511                                                                 }
 512                                                         }
 513                                                 }
 514                                         }
 515                                 }
 516                         }
 517                 }
 518         }
 519 }
 520
 521 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 522 {
 523         if (node->plane)
 524         {
 525                 float f = PlaneDiff(info->center, node->plane);
 526                 if (f >= -info->bestdist)
 527                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 528                 if (f <= info->bestdist)
 529                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 530         }
 531         else
 532         {
 533                 if (((mleaf_t *)node)->numleafsurfaces)
 534                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 535         }
 536 }
 537
 538 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
 539 {
 540         int i;
 541         findnonsolidlocationinfo_t info;
 542         if (model == NULL)
 543         {
 544                 VectorCopy(in, out);
 545                 return;
 546         }
 547         VectorCopy(in, info.center);
 548         info.radius = radius;
 549         info.model = model;
 550         i = 0;
 551         do
 552         {
 553                 VectorClear(info.nudge);
 554                 info.bestdist = radius;
 555                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 556                 VectorAdd(info.center, info.nudge, info.center);
 557         }
 558         while (info.bestdist < radius && ++i < 10);
 559         VectorCopy(info.center, out);
 560 }
 561
 562 int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 563 {
 564         switch(nativecontents)
 565         {
 566                 case CONTENTS_EMPTY:
 567                         return 0;
 568                 case CONTENTS_SOLID:
 569                         return SUPERCONTENTS_SOLID;
 570                 case CONTENTS_WATER:
 571                         return SUPERCONTENTS_WATER;
 572                 case CONTENTS_SLIME:
 573                         return SUPERCONTENTS_SLIME;
 574                 case CONTENTS_LAVA:
 575                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 576                 case CONTENTS_SKY:
 577                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 578         }
 579         return 0;
 580 }
 581
 582 int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
 583 {
 584         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 585                 return CONTENTS_SOLID;
 586         if (supercontents & SUPERCONTENTS_SKY)
 587                 return CONTENTS_SKY;
 588         if (supercontents & SUPERCONTENTS_LAVA)
 589                 return CONTENTS_LAVA;
 590         if (supercontents & SUPERCONTENTS_SLIME)
 591                 return CONTENTS_SLIME;
 592         if (supercontents & SUPERCONTENTS_WATER)
 593                 return CONTENTS_WATER;
 594         return CONTENTS_EMPTY;
 595 }
 596
 597 typedef struct RecursiveHullCheckTraceInfo_s
 598 {
 599         // the hull we're tracing through
 600         const hull_t *hull;
 601
 602         // the trace structure to fill in
 603         trace_t *trace;
 604
 605         // start, end, and end - start (in model space)
 606         double start[3];
 607         double end[3];
 608         double dist[3];
 609 }
 610 RecursiveHullCheckTraceInfo_t;
 611
 612 // 1/32 epsilon to keep floating point happy
 613 #define DIST_EPSILON (0.03125)
 614
 615 #define HULLCHECKSTATE_EMPTY 0
 616 #define HULLCHECKSTATE_SOLID 1
 617 #define HULLCHECKSTATE_DONE 2
 618
 619 extern cvar_t collision_prefernudgedfraction;
 620 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 621 {
 622         // status variables, these don't need to be saved on the stack when
 623         // recursing...  but are because this should be thread-safe
 624         // (note: tracing against a bbox is not thread-safe, yet)
 625         int ret;
 626         mplane_t *plane;
 627         double t1, t2;
 628
 629         // variables that need to be stored on the stack when recursing
 630         dclipnode_t *node;
 631         int side;
 632         double midf, mid[3];
 633
 634         // LordHavoc: a goto!  everyone flee in terror... :)
 635 loc0:
 636         // check for empty
 637         if (num < 0)
 638         {
 639                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 640                 if (!t->trace->startfound)
 641                 {
 642                         t->trace->startfound = true;
 643                         t->trace->startsupercontents |= num;
 644                 }
 645                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 646                         t->trace->inwater = true;
 647                 if (num == 0)
 648                         t->trace->inopen = true;
 649                 if (num & SUPERCONTENTS_SOLID)
 650                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 651                 else if (num & SUPERCONTENTS_SKY)
 652                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 653                 else if (num & SUPERCONTENTS_LAVA)
 654                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 655                 else if (num & SUPERCONTENTS_SLIME)
 656                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 657                 else
 658                         t->trace->hittexture = &mod_q1bsp_texture_water;
 659                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 660                 t->trace->hitsupercontents = num;
 661                 if (num & t->trace->hitsupercontentsmask)
 662                 {
 663                         // if the first leaf is solid, set startsolid
 664                         if (t->trace->allsolid)
 665                                 t->trace->startsolid = true;
 666 #if COLLISIONPARANOID >= 3
 667                         Con_Print("S");
 668 #endif
 669                         return HULLCHECKSTATE_SOLID;
 670                 }
 671                 else
 672                 {
 673                         t->trace->allsolid = false;
 674 #if COLLISIONPARANOID >= 3
 675                         Con_Print("E");
 676 #endif
 677                         return HULLCHECKSTATE_EMPTY;
 678                 }
 679         }
 680
 681         // find the point distances
 682         node = t->hull->clipnodes + num;
 683
 684         plane = t->hull->planes + node->planenum;
 685         if (plane->type < 3)
 686         {
 687                 t1 = p1[plane->type] - plane->dist;
 688                 t2 = p2[plane->type] - plane->dist;
 689         }
 690         else
 691         {
 692                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 693                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 694         }
 695
 696         if (t1 < 0)
 697         {
 698                 if (t2 < 0)
 699                 {
 700 #if COLLISIONPARANOID >= 3
 701                         Con_Print("<");
 702 #endif
 703                         num = node->children[1];
 704                         goto loc0;
 705                 }
 706                 side = 1;
 707         }
 708         else
 709         {
 710                 if (t2 >= 0)
 711                 {
 712 #if COLLISIONPARANOID >= 3
 713                         Con_Print(">");
 714 #endif
 715                         num = node->children[0];
 716                         goto loc0;
 717                 }
 718                 side = 0;
 719         }
 720
 721         // the line intersects, find intersection point
 722         // LordHavoc: this uses the original trace for maximum accuracy
 723 #if COLLISIONPARANOID >= 3
 724         Con_Print("M");
 725 #endif
 726         if (plane->type < 3)
 727         {
 728                 t1 = t->start[plane->type] - plane->dist;
 729                 t2 = t->end[plane->type] - plane->dist;
 730         }
 731         else
 732         {
 733                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 734                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 735         }
 736
 737         midf = t1 / (t1 - t2);
 738         midf = bound(p1f, midf, p2f);
 739         VectorMA(t->start, midf, t->dist, mid);
 740
 741         // recurse both sides, front side first
 742         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 743         // if this side is not empty, return what it is (solid or done)
 744         if (ret != HULLCHECKSTATE_EMPTY)
 745                 return ret;
 746
 747         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 748         // if other side is not solid, return what it is (empty or done)
 749         if (ret != HULLCHECKSTATE_SOLID)
 750                 return ret;
 751
 752         // front is air and back is solid, this is the impact point...
 753         if (side)
 754         {
 755                 t->trace->plane.dist = -plane->dist;
 756                 VectorNegate (plane->normal, t->trace->plane.normal);
 757         }
 758         else
 759         {
 760                 t->trace->plane.dist = plane->dist;
 761                 VectorCopy (plane->normal, t->trace->plane.normal);
 762         }
 763
 764         // calculate the true fraction
 765         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 766         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 767         midf = t1 / (t1 - t2);
 768         t->trace->realfraction = bound(0, midf, 1);
 769
 770         // calculate the return fraction which is nudged off the surface a bit
 771         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 772         t->trace->fraction = bound(0, midf, 1);
 773
 774         if (collision_prefernudgedfraction.integer)
 775                 t->trace->realfraction = t->trace->fraction;
 776
 777 #if COLLISIONPARANOID >= 3
 778         Con_Print("D");
 779 #endif
 780         return HULLCHECKSTATE_DONE;
 781 }
 782
 783 //#if COLLISIONPARANOID < 2
 784 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 785 {
 786         while (num >= 0)
 787                 num = t->hull->clipnodes[num].children[(t->hull->planes[t->hull->clipnodes[num].planenum].type < 3 ? t->start[t->hull->planes[t->hull->clipnodes[num].planenum].type] : DotProduct(t->hull->planes[t->hull->clipnodes[num].planenum].normal, t->start)) < t->hull->planes[t->hull->clipnodes[num].planenum].dist];
 788         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 789         t->trace->startsupercontents |= num;
 790         if (num & SUPERCONTENTS_LIQUIDSMASK)
 791                 t->trace->inwater = true;
 792         if (num == 0)
 793                 t->trace->inopen = true;
 794         if (num & t->trace->hitsupercontentsmask)
 795         {
 796                 t->trace->allsolid = t->trace->startsolid = true;
 797                 return HULLCHECKSTATE_SOLID;
 798         }
 799         else
 800         {
 801                 t->trace->allsolid = t->trace->startsolid = false;
 802                 return HULLCHECKSTATE_EMPTY;
 803         }
 804 }
 805 //#endif
 806
 807 static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 808 {
 809         // this function currently only supports same size start and end
 810         double boxsize[3];
 811         RecursiveHullCheckTraceInfo_t rhc;
 812
 813         memset(&rhc, 0, sizeof(rhc));
 814         memset(trace, 0, sizeof(trace_t));
 815         rhc.trace = trace;
 816         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 817         rhc.trace->fraction = 1;
 818         rhc.trace->realfraction = 1;
 819         rhc.trace->allsolid = true;
 820         VectorSubtract(boxmaxs, boxmins, boxsize);
 821         if (boxsize[0] < 3)
 822                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 823         else if (model->brush.ismcbsp)
 824         {
 825                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 826                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 827                 else
 828                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 829         }
 830         else if (model->brush.ishlbsp)
 831         {
 832                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 833                 // minor float precision errors from the box being transformed around
 834                 if (boxsize[0] < 32.1)
 835                 {
 836                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 837                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 838                         else
 839                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 840                 }
 841                 else
 842                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 843         }
 844         else
 845         {
 846                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 847                 // minor float precision errors from the box being transformed around
 848                 if (boxsize[0] < 32.1)
 849                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 850                 else
 851                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 852         }
 853         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 854         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 855         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 856 #if COLLISIONPARANOID >= 2
 857         Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
 858         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 859         {
 860
 861                 double test[3];
 862                 trace_t testtrace;
 863                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 864                 memset(&testtrace, 0, sizeof(trace_t));
 865                 rhc.trace = &testtrace;
 866                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 867                 rhc.trace->fraction = 1;
 868                 rhc.trace->realfraction = 1;
 869                 rhc.trace->allsolid = true;
 870                 VectorCopy(test, rhc.start);
 871                 VectorCopy(test, rhc.end);
 872                 VectorClear(rhc.dist);
 873                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 874                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 875                 if (!trace->startsolid && testtrace.startsolid)
 876                         Con_Printf(" - ended in solid!\n");
 877         }
 878         Con_Print("\n");
 879 #else
 880         if (VectorLength2(rhc.dist))
 881                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 882         else
 883                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 884 #endif
 885 }
 886
 887 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, texture_t *boxtexture)
 888 {
 889 #if 1
 890         colbrushf_t cbox;
 891         colplanef_t cbox_planes[6];
 892         cbox.supercontents = boxsupercontents;
 893         cbox.numplanes = 6;
 894         cbox.numpoints = 0;
 895         cbox.numtriangles = 0;
 896         cbox.planes = cbox_planes;
 897         cbox.points = NULL;
 898         cbox.elements = NULL;
 899         cbox.markframe = 0;
 900         cbox.mins[0] = 0;
 901         cbox.mins[1] = 0;
 902         cbox.mins[2] = 0;
 903         cbox.maxs[0] = 0;
 904         cbox.maxs[1] = 0;
 905         cbox.maxs[2] = 0;
 906         cbox_planes[0].normal[0] =  1;cbox_planes[0].normal[1] =  0;cbox_planes[0].normal[2] =  0;cbox_planes[0].dist = cmaxs[0] - mins[0];
 907         cbox_planes[1].normal[0] = -1;cbox_planes[1].normal[1] =  0;cbox_planes[1].normal[2] =  0;cbox_planes[1].dist = maxs[0] - cmins[0];
 908         cbox_planes[2].normal[0] =  0;cbox_planes[2].normal[1] =  1;cbox_planes[2].normal[2] =  0;cbox_planes[2].dist = cmaxs[1] - mins[1];
 909         cbox_planes[3].normal[0] =  0;cbox_planes[3].normal[1] = -1;cbox_planes[3].normal[2] =  0;cbox_planes[3].dist = maxs[1] - cmins[1];
 910         cbox_planes[4].normal[0] =  0;cbox_planes[4].normal[1] =  0;cbox_planes[4].normal[2] =  1;cbox_planes[4].dist = cmaxs[2] - mins[2];
 911         cbox_planes[5].normal[0] =  0;cbox_planes[5].normal[1] =  0;cbox_planes[5].normal[2] = -1;cbox_planes[5].dist = maxs[2] - cmins[2];
 912         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 913         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 914         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 915         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 916         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 917         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 918         memset(trace, 0, sizeof(trace_t));
 919         trace->hitsupercontentsmask = hitsupercontentsmask;
 920         trace->fraction = 1;
 921         trace->realfraction = 1;
 922         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 923 #else
 924         RecursiveHullCheckTraceInfo_t rhc;
 925         static hull_t box_hull;
 926         static dclipnode_t box_clipnodes[6];
 927         static mplane_t box_planes[6];
 928         // fill in a default trace
 929         memset(&rhc, 0, sizeof(rhc));
 930         memset(trace, 0, sizeof(trace_t));
 931         //To keep everything totally uniform, bounding boxes are turned into small
 932         //BSP trees instead of being compared directly.
 933         // create a temp hull from bounding box sizes
 934         box_planes[0].dist = cmaxs[0] - mins[0];
 935         box_planes[1].dist = cmins[0] - maxs[0];
 936         box_planes[2].dist = cmaxs[1] - mins[1];
 937         box_planes[3].dist = cmins[1] - maxs[1];
 938         box_planes[4].dist = cmaxs[2] - mins[2];
 939         box_planes[5].dist = cmins[2] - maxs[2];
 940 #if COLLISIONPARANOID >= 3
 941         Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
 942 #endif
 943
 944         if (box_hull.clipnodes == NULL)
 945         {
 946                 int i, side;
 947
 948                 //Set up the planes and clipnodes so that the six floats of a bounding box
 949                 //can just be stored out and get a proper hull_t structure.
 950
 951                 box_hull.clipnodes = box_clipnodes;
 952                 box_hull.planes = box_planes;
 953                 box_hull.firstclipnode = 0;
 954                 box_hull.lastclipnode = 5;
 955
 956                 for (i = 0;i < 6;i++)
 957                 {
 958                         box_clipnodes[i].planenum = i;
 959
 960                         side = i&1;
 961
 962                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 963                         if (i != 5)
 964                                 box_clipnodes[i].children[side^1] = i + 1;
 965                         else
 966                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 967
 968                         box_planes[i].type = i>>1;
 969                         box_planes[i].normal[i>>1] = 1;
 970                 }
 971         }
 972
 973         // trace a line through the generated clipping hull
 974         //rhc.boxsupercontents = boxsupercontents;
 975         rhc.hull = &box_hull;
 976         rhc.trace = trace;
 977         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 978         rhc.trace->fraction = 1;
 979         rhc.trace->realfraction = 1;
 980         rhc.trace->allsolid = true;
 981         VectorCopy(start, rhc.start);
 982         VectorCopy(end, rhc.end);
 983         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 984         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 985         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 986         if (rhc.trace->startsupercontents)
 987                 rhc.trace->startsupercontents = boxsupercontents;
 988 #endif
 989 }
 990
 991 static int Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
 992 {
 993         double t1, t2;
 994         double midf, mid[3];
 995         int ret, side;
 996
 997         // check for empty
 998         while (node->plane)
 999         {
1000                 // find the point distances
1001                 mplane_t *plane = node->plane;
1002                 if (plane->type < 3)
1003                 {
1004                         t1 = p1[plane->type] - plane->dist;
1005                         t2 = p2[plane->type] - plane->dist;
1006                 }
1007                 else
1008                 {
1009                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1010                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1011                 }
1012
1013                 if (t1 < 0)
1014                 {
1015                         if (t2 < 0)
1016                         {
1017                                 node = node->children[1];
1018                                 continue;
1019                         }
1020                         side = 1;
1021                 }
1022                 else
1023                 {
1024                         if (t2 >= 0)
1025                         {
1026                                 node = node->children[0];
1027                                 continue;
1028                         }
1029                         side = 0;
1030                 }
1031
1032                 midf = t1 / (t1 - t2);
1033                 VectorLerp(p1, midf, p2, mid);
1034
1035                 // recurse both sides, front side first
1036                 // return 2 if empty is followed by solid (hit something)
1037                 // do not return 2 if both are solid or both empty,
1038                 // or if start is solid and end is empty
1039                 // as these degenerate cases usually indicate the eye is in solid and
1040                 // should see the target point anyway
1041                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
1042                 if (ret != 0)
1043                         return ret;
1044                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
1045                 if (ret != 1)
1046                         return ret;
1047                 return 2;
1048         }
1049         return ((mleaf_t *)node)->clusterindex < 0;
1050 }
1051
1052 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1053 {
1054         // this function currently only supports same size start and end
1055         double tracestart[3], traceend[3];
1056         VectorCopy(start, tracestart);
1057         VectorCopy(end, traceend);
1058         return Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend) != 2;
1059 }
1060
1061 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
1062 {
1063         int side;
1064         float front, back;
1065         float mid, distz = endz - startz;
1066
1067 loc0:
1068         if (!node->plane)
1069                 return false;           // didn't hit anything
1070
1071         switch (node->plane->type)
1072         {
1073         case PLANE_X:
1074                 node = node->children[x < node->plane->dist];
1075                 goto loc0;
1076         case PLANE_Y:
1077                 node = node->children[y < node->plane->dist];
1078                 goto loc0;
1079         case PLANE_Z:
1080                 side = startz < node->plane->dist;
1081                 if ((endz < node->plane->dist) == side)
1082                 {
1083                         node = node->children[side];
1084                         goto loc0;
1085                 }
1086                 // found an intersection
1087                 mid = node->plane->dist;
1088                 break;
1089         default:
1090                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1091                 front += startz * node->plane->normal[2];
1092                 back += endz * node->plane->normal[2];
1093                 side = front < node->plane->dist;
1094                 if ((back < node->plane->dist) == side)
1095                 {
1096                         node = node->children[side];
1097                         goto loc0;
1098                 }
1099                 // found an intersection
1100                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1101                 break;
1102         }
1103
1104         // go down front side
1105         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1106                 return true;    // hit something
1107         else
1108         {
1109                 // check for impact on this node
1110                 if (node->numsurfaces)
1111                 {
1112                         int i, ds, dt;
1113                         msurface_t *surface;
1114
1115                         surface = model->data_surfaces + node->firstsurface;
1116                         for (i = 0;i < node->numsurfaces;i++, surface++)
1117                         {
1118                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1119                                         continue;       // no lightmaps
1120
1121                                 ds = (int) (x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0];
1122                                 dt = (int) (x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1];
1123
1124                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1125                                 {
1126                                         unsigned char *lightmap;
1127                                         int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
1128                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1129                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1130                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1131                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1132
1133                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1134
1135                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1136                                         {
1137                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1138                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1139                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1140                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1141                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1142                                                 lightmap += size3;
1143                                         }
1144
1145 /*
1146 LordHavoc: here's the readable version of the interpolation
1147 code, not quite as easy for the compiler to optimize...
1148
1149 dsfrac is the X position in the lightmap pixel, * 16
1150 dtfrac is the Y position in the lightmap pixel, * 16
1151 r00 is top left corner, r01 is top right corner
1152 r10 is bottom left corner, r11 is bottom right corner
1153 g and b are the same layout.
1154 r0 and r1 are the top and bottom intermediate results
1155
1156 first we interpolate the top two points, to get the top
1157 edge sample
1158
1159         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1160         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1161         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1162
1163 then we interpolate the bottom two points, to get the
1164 bottom edge sample
1165
1166         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1167         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1168         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1169
1170 then we interpolate the top and bottom samples to get the
1171 middle sample (the one which was requested)
1172
1173         r = (((r1-r0) * dtfrac) >> 4) + r0;
1174         g = (((g1-g0) * dtfrac) >> 4) + g0;
1175         b = (((b1-b0) * dtfrac) >> 4) + b0;
1176 */
1177
1178                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1179                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1180                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1181                                         return true; // success
1182                                 }
1183                         }
1184                 }
1185
1186                 // go down back side
1187                 node = node->children[side ^ 1];
1188                 startz = mid;
1189                 distz = endz - startz;
1190                 goto loc0;
1191         }
1192 }
1193
1194 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1195 {
1196         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1197         VectorSet(diffusenormal, 0, 0, 1);
1198
1199         if (!model->brushq1.lightdata)
1200         {
1201                 VectorSet(ambientcolor, 1, 1, 1);
1202                 VectorSet(diffusecolor, 0, 0, 0);
1203                 return;
1204         }
1205
1206         Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2] + 0.125, p[2] - 65536);
1207 }
1208
1209 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1210 {
1211         int c;
1212         unsigned char *outstart = out;
1213         while (out < outend)
1214         {
1215                 if (in == inend)
1216                 {
1217                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1218                         return;
1219                 }
1220                 c = *in++;
1221                 if (c)
1222                         *out++ = c;
1223                 else
1224                 {
1225                         if (in == inend)
1226                         {
1227                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1228                                 return;
1229                         }
1230                         for (c = *in++;c > 0;c--)
1231                         {
1232                                 if (out == outend)
1233                                 {
1234                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1235                                         return;
1236                                 }
1237                                 *out++ = 0;
1238                         }
1239                 }
1240         }
1241 }
1242
1243 /*
1244 =============
1245 R_Q1BSP_LoadSplitSky
1246
1247 A sky texture is 256*128, with the right side being a masked overlay
1248 ==============
1249 */
1250 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1251 {
1252         int i, j;
1253         unsigned solidpixels[128*128], alphapixels[128*128];
1254
1255         // allocate a texture pool if we need it
1256         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1257                 loadmodel->texturepool = R_AllocTexturePool();
1258
1259         // if sky isn't the right size, just use it as a solid layer
1260         if (width != 256 || height != 128)
1261         {
1262                 loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", width, height, src, bytesperpixel == 4 ? TEXTYPE_RGBA : TEXTYPE_PALETTE, TEXF_PRECACHE, bytesperpixel == 1 ? palette_complete : NULL);
1263                 loadmodel->brush.alphaskytexture = NULL;
1264                 return;
1265         }
1266
1267         if (bytesperpixel == 4)
1268         {
1269                 for (i = 0;i < 128;i++)
1270                 {
1271                         for (j = 0;j < 128;j++)
1272                         {
1273                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1274                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1275                         }
1276                 }
1277         }
1278         else
1279         {
1280                 // make an average value for the back to avoid
1281                 // a fringe on the top level
1282                 int p, r, g, b;
1283                 union
1284                 {
1285                         unsigned int i;
1286                         unsigned char b[4];
1287                 }
1288                 rgba;
1289                 r = g = b = 0;
1290                 for (i = 0;i < 128;i++)
1291                 {
1292                         for (j = 0;j < 128;j++)
1293                         {
1294                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1295                                 r += rgba.b[0];
1296                                 g += rgba.b[1];
1297                                 b += rgba.b[2];
1298                         }
1299                 }
1300                 rgba.b[0] = r/(128*128);
1301                 rgba.b[1] = g/(128*128);
1302                 rgba.b[2] = b/(128*128);
1303                 rgba.b[3] = 0;
1304                 for (i = 0;i < 128;i++)
1305                 {
1306                         for (j = 0;j < 128;j++)
1307                         {
1308                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1309                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1310                         }
1311                 }
1312         }
1313
1314         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1315         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1316 }
1317
1318 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1319 {
1320         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1321         skinframe_t *skinframe;
1322         miptex_t *dmiptex;
1323         texture_t *tx, *tx2, *anims[10], *altanims[10];
1324         dmiptexlump_t *m;
1325         unsigned char *data, *mtdata;
1326         const char *s;
1327         char mapname[MAX_QPATH], name[MAX_QPATH];
1328
1329         loadmodel->data_textures = NULL;
1330
1331         // add two slots for notexture walls and notexture liquids
1332         if (l->filelen)
1333         {
1334                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1335                 m->nummiptex = LittleLong (m->nummiptex);
1336                 loadmodel->num_textures = m->nummiptex + 2;
1337         }
1338         else
1339         {
1340                 m = NULL;
1341                 loadmodel->num_textures = 2;
1342         }
1343
1344         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1345
1346         // fill out all slots with notexture
1347         skinframe = R_SkinFrame_LoadMissing();
1348         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1349         {
1350                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1351                 tx->width = 16;
1352                 tx->height = 16;
1353                 tx->numskinframes = 1;
1354                 tx->skinframerate = 1;
1355                 tx->skinframes[0] = skinframe;
1356                 tx->currentskinframe = tx->skinframes[0];
1357                 tx->basematerialflags = 0;
1358                 if (i == loadmodel->num_textures - 1)
1359                 {
1360                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1361                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1362                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1363                 }
1364                 else
1365                 {
1366                         tx->basematerialflags |= MATERIALFLAG_WALL;
1367                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1368                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1369                 }
1370                 tx->currentframe = tx;
1371         }
1372
1373         if (!m)
1374                 return;
1375
1376         s = loadmodel->name;
1377         if (!strncasecmp(s, "maps/", 5))
1378                 s += 5;
1379         FS_StripExtension(s, mapname, sizeof(mapname));
1380
1381         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1382         dofs = m->dataofs;
1383         // LordHavoc: mostly rewritten map texture loader
1384         for (i = 0;i < m->nummiptex;i++)
1385         {
1386                 dofs[i] = LittleLong(dofs[i]);
1387                 if (dofs[i] == -1 || r_nosurftextures.integer)
1388                         continue;
1389                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1390
1391                 // make sure name is no more than 15 characters
1392                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1393                         name[j] = dmiptex->name[j];
1394                 name[j] = 0;
1395
1396                 mtwidth = LittleLong(dmiptex->width);
1397                 mtheight = LittleLong(dmiptex->height);
1398                 mtdata = NULL;
1399                 j = LittleLong(dmiptex->offsets[0]);
1400                 if (j)
1401                 {
1402                         // texture included
1403                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1404                         {
1405                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1406                                 continue;
1407                         }
1408                         mtdata = (unsigned char *)dmiptex + j;
1409                 }
1410
1411                 if ((mtwidth & 15) || (mtheight & 15))
1412                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1413
1414                 // LordHavoc: force all names to lowercase
1415                 for (j = 0;name[j];j++)
1416                         if (name[j] >= 'A' && name[j] <= 'Z')
1417                                 name[j] += 'a' - 'A';
1418
1419                 tx = loadmodel->data_textures + i;
1420                 strlcpy(tx->name, name, sizeof(tx->name));
1421                 tx->width = mtwidth;
1422                 tx->height = mtheight;
1423
1424                 if (!tx->name[0])
1425                 {
1426                         sprintf(tx->name, "unnamed%i", i);
1427                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1428                 }
1429
1430                 if (cls.state != ca_dedicated)
1431                 {
1432                         // LordHavoc: HL sky textures are entirely different than quake
1433                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1434                         {
1435                                 if (loadmodel->isworldmodel)
1436                                 {
1437                                         data = loadimagepixels(tx->name, false, 0, 0);
1438                                         if (data)
1439                                         {
1440                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1441                                                 Mem_Free(data);
1442                                         }
1443                                         else if (mtdata != NULL)
1444                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1445                                 }
1446                         }
1447                         else
1448                         {
1449                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
1450                                 if (!skinframe)
1451                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP);
1452                                 if (!skinframe)
1453                                 {
1454                                         // did not find external texture, load it from the bsp or wad3
1455                                         if (loadmodel->brush.ishlbsp)
1456                                         {
1457                                                 // internal texture overrides wad
1458                                                 unsigned char *pixels, *freepixels;
1459                                                 pixels = freepixels = NULL;
1460                                                 if (mtdata)
1461                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1462                                                 if (pixels == NULL)
1463                                                         pixels = freepixels = W_GetTexture(tx->name);
1464                                                 if (pixels != NULL)
1465                                                 {
1466                                                         tx->width = image_width;
1467                                                         tx->height = image_height;
1468                                                         skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, false, pixels, image_width, image_height, 32, NULL, NULL);
1469                                                 }
1470                                                 if (freepixels)
1471                                                         Mem_Free(freepixels);
1472                                         }
1473                                         else if (mtdata) // texture included
1474                                                 skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1475                                 }
1476                                 // if skinframe is still NULL the "missing" texture will be used
1477                                 if (skinframe)
1478                                         tx->skinframes[0] = skinframe;
1479                         }
1480                 }
1481
1482                 tx->basematerialflags = 0;
1483                 if (tx->name[0] == '*')
1484                 {
1485                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1486                         if (strncmp(tx->name,"*lava",5)
1487                          && strncmp(tx->name,"*teleport",9)
1488                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1489                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
1490                         if (!strncmp(tx->name, "*lava", 5))
1491                         {
1492                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1493                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1494                         }
1495                         else if (!strncmp(tx->name, "*slime", 6))
1496                         {
1497                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1498                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1499                         }
1500                         else
1501                         {
1502                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1503                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1504                         }
1505                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1506                 }
1507                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1508                 {
1509                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1510                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1511                         tx->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1512                 }
1513                 else
1514                 {
1515                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1516                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1517                         tx->basematerialflags |= MATERIALFLAG_WALL;
1518                 }
1519                 if (tx->skinframes[0]->fog)
1520                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1521
1522                 // start out with no animation
1523                 tx->currentframe = tx;
1524                 tx->currentskinframe = tx->skinframes[0];
1525         }
1526
1527         // sequence the animations
1528         for (i = 0;i < m->nummiptex;i++)
1529         {
1530                 tx = loadmodel->data_textures + i;
1531                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1532                         continue;
1533                 if (tx->anim_total[0] || tx->anim_total[1])
1534                         continue;       // already sequenced
1535
1536                 // find the number of frames in the animation
1537                 memset(anims, 0, sizeof(anims));
1538                 memset(altanims, 0, sizeof(altanims));
1539
1540                 for (j = i;j < m->nummiptex;j++)
1541                 {
1542                         tx2 = loadmodel->data_textures + j;
1543                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1544                                 continue;
1545
1546                         num = tx2->name[1];
1547                         if (num >= '0' && num <= '9')
1548                                 anims[num - '0'] = tx2;
1549                         else if (num >= 'a' && num <= 'j')
1550                                 altanims[num - 'a'] = tx2;
1551                         else
1552                                 Con_Printf("Bad animating texture %s\n", tx->name);
1553                 }
1554
1555                 max = altmax = 0;
1556                 for (j = 0;j < 10;j++)
1557                 {
1558                         if (anims[j])
1559                                 max = j + 1;
1560                         if (altanims[j])
1561                                 altmax = j + 1;
1562                 }
1563                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1564
1565                 incomplete = false;
1566                 for (j = 0;j < max;j++)
1567                 {
1568                         if (!anims[j])
1569                         {
1570                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1571                                 incomplete = true;
1572                         }
1573                 }
1574                 for (j = 0;j < altmax;j++)
1575                 {
1576                         if (!altanims[j])
1577                         {
1578                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1579                                 incomplete = true;
1580                         }
1581                 }
1582                 if (incomplete)
1583                         continue;
1584
1585                 if (altmax < 1)
1586                 {
1587                         // if there is no alternate animation, duplicate the primary
1588                         // animation into the alternate
1589                         altmax = max;
1590                         for (k = 0;k < 10;k++)
1591                                 altanims[k] = anims[k];
1592                 }
1593
1594                 // link together the primary animation
1595                 for (j = 0;j < max;j++)
1596                 {
1597                         tx2 = anims[j];
1598                         tx2->animated = true;
1599                         tx2->anim_total[0] = max;
1600                         tx2->anim_total[1] = altmax;
1601                         for (k = 0;k < 10;k++)
1602                         {
1603                                 tx2->anim_frames[0][k] = anims[k];
1604                                 tx2->anim_frames[1][k] = altanims[k];
1605                         }
1606                 }
1607
1608                 // if there really is an alternate anim...
1609                 if (anims[0] != altanims[0])
1610                 {
1611                         // link together the alternate animation
1612                         for (j = 0;j < altmax;j++)
1613                         {
1614                                 tx2 = altanims[j];
1615                                 tx2->animated = true;
1616                                 // the primary/alternate are reversed here
1617                                 tx2->anim_total[0] = altmax;
1618                                 tx2->anim_total[1] = max;
1619                                 for (k = 0;k < 10;k++)
1620                                 {
1621                                         tx2->anim_frames[0][k] = altanims[k];
1622                                         tx2->anim_frames[1][k] = anims[k];
1623                                 }
1624                         }
1625                 }
1626         }
1627 }
1628
1629 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1630 {
1631         int i;
1632         unsigned char *in, *out, *data, d;
1633         char litfilename[MAX_QPATH];
1634         char dlitfilename[MAX_QPATH];
1635         fs_offset_t filesize;
1636         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1637         {
1638                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1639                 for (i=0; i<l->filelen; i++)
1640                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1641         }
1642         else if (loadmodel->brush.ismcbsp)
1643         {
1644                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1645                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1646         }
1647         else // LordHavoc: bsp version 29 (normal white lighting)
1648         {
1649                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1650                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1651                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1652                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1653                 strlcat (litfilename, ".lit", sizeof (litfilename));
1654                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1655                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1656                 if (data)
1657                 {
1658                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1659                         {
1660                                 i = LittleLong(((int *)data)[1]);
1661                                 if (i == 1)
1662                                 {
1663                                         Con_DPrintf("loaded %s\n", litfilename);
1664                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1665                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1666                                         Mem_Free(data);
1667                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1668                                         if (data)
1669                                         {
1670                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1671                                                 {
1672                                                         i = LittleLong(((int *)data)[1]);
1673                                                         if (i == 1)
1674                                                         {
1675                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1676                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1677                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1678                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1679                                                                 loadmodel->brushq3.deluxemapping = true;
1680                                                         }
1681                                                 }
1682                                                 Mem_Free(data);
1683                                                 data = NULL;
1684                                         }
1685                                         return;
1686                                 }
1687                                 else
1688                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1689                         }
1690                         else if (filesize == 8)
1691                                 Con_Print("Empty .lit file, ignoring\n");
1692                         else
1693                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1694                         if (data)
1695                         {
1696                                 Mem_Free(data);
1697                                 data = NULL;
1698                         }
1699                 }
1700                 // LordHavoc: oh well, expand the white lighting data
1701                 if (!l->filelen)
1702                         return;
1703                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1704                 in = mod_base + l->fileofs;
1705                 out = loadmodel->brushq1.lightdata;
1706                 for (i = 0;i < l->filelen;i++)
1707                 {
1708                         d = *in++;
1709                         *out++ = d;
1710                         *out++ = d;
1711                         *out++ = d;
1712                 }
1713         }
1714 }
1715
1716 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1717 {
1718         loadmodel->brushq1.num_compressedpvs = 0;
1719         loadmodel->brushq1.data_compressedpvs = NULL;
1720         if (!l->filelen)
1721                 return;
1722         loadmodel->brushq1.num_compressedpvs = l->filelen;
1723         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1724         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1725 }
1726
1727 // used only for HalfLife maps
1728 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1729 {
1730         char key[128], value[4096];
1731         char wadname[128];
1732         int i, j, k;
1733         if (!data)
1734                 return;
1735         if (!COM_ParseTokenConsole(&data))
1736                 return; // error
1737         if (com_token[0] != '{')
1738                 return; // error
1739         while (1)
1740         {
1741                 if (!COM_ParseTokenConsole(&data))
1742                         return; // error
1743                 if (com_token[0] == '}')
1744                         break; // end of worldspawn
1745                 if (com_token[0] == '_')
1746                         strlcpy(key, com_token + 1, sizeof(key));
1747                 else
1748                         strlcpy(key, com_token, sizeof(key));
1749                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1750                         key[strlen(key)-1] = 0;
1751                 if (!COM_ParseTokenConsole(&data))
1752                         return; // error
1753                 dpsnprintf(value, sizeof(value), "%s", com_token);
1754                 if (!strcmp("wad", key)) // for HalfLife maps
1755                 {
1756                         if (loadmodel->brush.ishlbsp)
1757                         {
1758                                 j = 0;
1759                                 for (i = 0;i < (int)sizeof(value);i++)
1760                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1761                                                 break;
1762                                 if (value[i])
1763                                 {
1764                                         for (;i < (int)sizeof(value);i++)
1765                                         {
1766                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1767                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1768                                                         j = i+1;
1769                                                 else if (value[i] == ';' || value[i] == 0)
1770                                                 {
1771                                                         k = value[i];
1772                                                         value[i] = 0;
1773                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1774                                                         strlcat(wadname, &value[j], sizeof(wadname));
1775                                                         W_LoadTextureWadFile(wadname, false);
1776                                                         j = i+1;
1777                                                         if (!k)
1778                                                                 break;
1779                                                 }
1780                                         }
1781                                 }
1782                         }
1783                 }
1784         }
1785 }
1786
1787 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1788 {
1789         loadmodel->brush.entities = NULL;
1790         if (!l->filelen)
1791                 return;
1792         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1793         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1794         if (loadmodel->brush.ishlbsp)
1795                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1796 }
1797
1798
1799 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1800 {
1801         dvertex_t       *in;
1802         mvertex_t       *out;
1803         int                     i, count;
1804
1805         in = (dvertex_t *)(mod_base + l->fileofs);
1806         if (l->filelen % sizeof(*in))
1807                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1808         count = l->filelen / sizeof(*in);
1809         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1810
1811         loadmodel->brushq1.vertexes = out;
1812         loadmodel->brushq1.numvertexes = count;
1813
1814         for ( i=0 ; i<count ; i++, in++, out++)
1815         {
1816                 out->position[0] = LittleFloat(in->point[0]);
1817                 out->position[1] = LittleFloat(in->point[1]);
1818                 out->position[2] = LittleFloat(in->point[2]);
1819         }
1820 }
1821
1822 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1823 // can be used for this
1824 // REMOVEME
1825 int SB_ReadInt (unsigned char **buffer)
1826 {
1827         int     i;
1828         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1829         (*buffer) += 4;
1830         return i;
1831 }
1832
1833 // REMOVEME
1834 float SB_ReadFloat (unsigned char **buffer)
1835 {
1836         union
1837         {
1838                 int             i;
1839                 float   f;
1840         } u;
1841
1842         u.i = SB_ReadInt (buffer);
1843         return u.f;
1844 }
1845
1846 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1847 {
1848         unsigned char           *index;
1849         dmodel_t        *out;
1850         int                     i, j, count;
1851
1852         index = (unsigned char *)(mod_base + l->fileofs);
1853         if (l->filelen % (48+4*hullinfo->filehulls))
1854                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1855
1856         count = l->filelen / (48+4*hullinfo->filehulls);
1857         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1858
1859         loadmodel->brushq1.submodels = out;
1860         loadmodel->brush.numsubmodels = count;
1861
1862         for (i = 0; i < count; i++, out++)
1863         {
1864         // spread out the mins / maxs by a pixel
1865                 out->mins[0] = SB_ReadFloat (&index) - 1;
1866                 out->mins[1] = SB_ReadFloat (&index) - 1;
1867                 out->mins[2] = SB_ReadFloat (&index) - 1;
1868                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1869                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1870                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1871                 out->origin[0] = SB_ReadFloat (&index);
1872                 out->origin[1] = SB_ReadFloat (&index);
1873                 out->origin[2] = SB_ReadFloat (&index);
1874                 for (j = 0; j < hullinfo->filehulls; j++)
1875                         out->headnode[j] = SB_ReadInt (&index);
1876                 out->visleafs = SB_ReadInt (&index);
1877                 out->firstface = SB_ReadInt (&index);
1878                 out->numfaces = SB_ReadInt (&index);
1879         }
1880 }
1881
1882 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1883 {
1884         dedge_t *in;
1885         medge_t *out;
1886         int     i, count;
1887
1888         in = (dedge_t *)(mod_base + l->fileofs);
1889         if (l->filelen % sizeof(*in))
1890                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1891         count = l->filelen / sizeof(*in);
1892         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1893
1894         loadmodel->brushq1.edges = out;
1895         loadmodel->brushq1.numedges = count;
1896
1897         for ( i=0 ; i<count ; i++, in++, out++)
1898         {
1899                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1900                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1901                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1902                 {
1903                         Con_Printf("Mod_Q1BSP_LoadEdges: %s has invalid vertex indices in edge %i (vertices %i %i >= numvertices %i)\n", loadmodel->name, i, out->v[0], out->v[1], loadmodel->brushq1.numvertexes);
1904                         out->v[0] = 0;
1905                         out->v[1] = 0;
1906                 }
1907         }
1908 }
1909
1910 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1911 {
1912         texinfo_t *in;
1913         mtexinfo_t *out;
1914         int i, j, k, count, miptex;
1915
1916         in = (texinfo_t *)(mod_base + l->fileofs);
1917         if (l->filelen % sizeof(*in))
1918                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1919         count = l->filelen / sizeof(*in);
1920         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1921
1922         loadmodel->brushq1.texinfo = out;
1923         loadmodel->brushq1.numtexinfo = count;
1924
1925         for (i = 0;i < count;i++, in++, out++)
1926         {
1927                 for (k = 0;k < 2;k++)
1928                         for (j = 0;j < 4;j++)
1929                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1930
1931                 miptex = LittleLong(in->miptex);
1932                 out->flags = LittleLong(in->flags);
1933
1934                 out->texture = NULL;
1935                 if (loadmodel->data_textures)
1936                 {
1937                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1938                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1939                         else
1940                                 out->texture = loadmodel->data_textures + miptex;
1941                 }
1942                 if (out->flags & TEX_SPECIAL)
1943                 {
1944                         // if texture chosen is NULL or the shader needs a lightmap,
1945                         // force to notexture water shader
1946                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1947                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1948                 }
1949                 else
1950                 {
1951                         // if texture chosen is NULL, force to notexture
1952                         if (out->texture == NULL)
1953                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1954                 }
1955         }
1956 }
1957
1958 #if 0
1959 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1960 {
1961         int             i, j;
1962         float   *v;
1963
1964         mins[0] = mins[1] = mins[2] = 9999;
1965         maxs[0] = maxs[1] = maxs[2] = -9999;
1966         v = verts;
1967         for (i = 0;i < numverts;i++)
1968         {
1969                 for (j = 0;j < 3;j++, v++)
1970                 {
1971                         if (*v < mins[j])
1972                                 mins[j] = *v;
1973                         if (*v > maxs[j])
1974                                 maxs[j] = *v;
1975                 }
1976         }
1977 }
1978
1979 #define MAX_SUBDIVPOLYTRIANGLES 4096
1980 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1981
1982 static int subdivpolyverts, subdivpolytriangles;
1983 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1984 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1985
1986 static int subdivpolylookupvert(vec3_t v)
1987 {
1988         int i;
1989         for (i = 0;i < subdivpolyverts;i++)
1990                 if (subdivpolyvert[i][0] == v[0]
1991                  && subdivpolyvert[i][1] == v[1]
1992                  && subdivpolyvert[i][2] == v[2])
1993                         return i;
1994         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1995                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1996         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1997         return subdivpolyverts++;
1998 }
1999
2000 static void SubdividePolygon(int numverts, float *verts)
2001 {
2002         int             i, i1, i2, i3, f, b, c, p;
2003         vec3_t  mins, maxs, front[256], back[256];
2004         float   m, *pv, *cv, dist[256], frac;
2005
2006         if (numverts > 250)
2007                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2008
2009         BoundPoly(numverts, verts, mins, maxs);
2010
2011         for (i = 0;i < 3;i++)
2012         {
2013                 m = (mins[i] + maxs[i]) * 0.5;
2014                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2015                 if (maxs[i] - m < 8)
2016                         continue;
2017                 if (m - mins[i] < 8)
2018                         continue;
2019
2020                 // cut it
2021                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2022                         dist[c] = cv[i] - m;
2023
2024                 f = b = 0;
2025                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2026                 {
2027                         if (dist[p] >= 0)
2028                         {
2029                                 VectorCopy(pv, front[f]);
2030                                 f++;
2031                         }
2032                         if (dist[p] <= 0)
2033                         {
2034                                 VectorCopy(pv, back[b]);
2035                                 b++;
2036                         }
2037                         if (dist[p] == 0 || dist[c] == 0)
2038                                 continue;
2039                         if ((dist[p] > 0) != (dist[c] > 0) )
2040                         {
2041                                 // clip point
2042                                 frac = dist[p] / (dist[p] - dist[c]);
2043                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2044                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2045                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2046                                 f++;
2047                                 b++;
2048                         }
2049                 }
2050
2051                 SubdividePolygon(f, front[0]);
2052                 SubdividePolygon(b, back[0]);
2053                 return;
2054         }
2055
2056         i1 = subdivpolylookupvert(verts);
2057         i2 = subdivpolylookupvert(verts + 3);
2058         for (i = 2;i < numverts;i++)
2059         {
2060                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2061                 {
2062                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2063                         return;
2064                 }
2065
2066                 i3 = subdivpolylookupvert(verts + i * 3);
2067                 subdivpolyindex[subdivpolytriangles][0] = i1;
2068                 subdivpolyindex[subdivpolytriangles][1] = i2;
2069                 subdivpolyindex[subdivpolytriangles][2] = i3;
2070                 i2 = i3;
2071                 subdivpolytriangles++;
2072         }
2073 }
2074
2075 //Breaks a polygon up along axial 64 unit
2076 //boundaries so that turbulent and sky warps
2077 //can be done reasonably.
2078 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2079 {
2080         int i, j;
2081         surfvertex_t *v;
2082         surfmesh_t *mesh;
2083
2084         subdivpolytriangles = 0;
2085         subdivpolyverts = 0;
2086         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2087         if (subdivpolytriangles < 1)
2088                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2089
2090         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2091         mesh->num_vertices = subdivpolyverts;
2092         mesh->num_triangles = subdivpolytriangles;
2093         mesh->vertex = (surfvertex_t *)(mesh + 1);
2094         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2095         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2096
2097         for (i = 0;i < mesh->num_triangles;i++)
2098                 for (j = 0;j < 3;j++)
2099                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2100
2101         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2102         {
2103                 VectorCopy(subdivpolyvert[i], v->v);
2104                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2105                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2106         }
2107 }
2108 #endif
2109
2110 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2111 {
2112         int y, x2, y2;
2113         int bestx = totalwidth, besty = 0;
2114         // find the left-most space we can find
2115         for (y = 0;y <= totalheight - blockheight;y++)
2116         {
2117                 x2 = 0;
2118                 for (y2 = 0;y2 < blockheight;y2++)
2119                         x2 = max(x2, lineused[y+y2]);
2120                 if (bestx > x2)
2121                 {
2122                         bestx = x2;
2123                         besty = y;
2124                 }
2125         }
2126         // if the best was not good enough, return failure
2127         if (bestx > totalwidth - blockwidth)
2128                 return false;
2129         // we found a good spot
2130         if (outx)
2131                 *outx = bestx;
2132         if (outy)
2133                 *outy = besty;
2134         // now mark the space used
2135         for (y2 = 0;y2 < blockheight;y2++)
2136                 lineused[besty+y2] = bestx + blockwidth;
2137         // return success
2138         return true;
2139 }
2140
2141 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2142 {
2143         dface_t *in;
2144         msurface_t *surface;
2145         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2146         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2147 #define LIGHTMAPSIZE 256
2148         rtexture_t *lightmaptexture, *deluxemaptexture;
2149         int lightmap_lineused[LIGHTMAPSIZE];
2150
2151         in = (dface_t *)(mod_base + l->fileofs);
2152         if (l->filelen % sizeof(*in))
2153                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2154         count = l->filelen / sizeof(*in);
2155         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2156         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2157
2158         loadmodel->num_surfaces = count;
2159
2160         totalverts = 0;
2161         totaltris = 0;
2162         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2163         {
2164                 numedges = LittleShort(in->numedges);
2165                 totalverts += numedges;
2166                 totaltris += numedges - 2;
2167         }
2168
2169         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2170
2171         lightmaptexture = NULL;
2172         deluxemaptexture = r_texture_blanknormalmap;
2173         lightmapnumber = 1;
2174         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2175
2176         totalverts = 0;
2177         totaltris = 0;
2178         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2179         {
2180                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2181
2182                 // FIXME: validate edges, texinfo, etc?
2183                 firstedge = LittleLong(in->firstedge);
2184                 numedges = LittleShort(in->numedges);
2185                 if ((unsigned int) firstedge > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges)
2186                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2187                 i = LittleShort(in->texinfo);
2188                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2189                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2190                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2191                 surface->texture = surface->lightmapinfo->texinfo->texture;
2192
2193                 planenum = LittleShort(in->planenum);
2194                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2195                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2196
2197                 //surface->flags = surface->texture->flags;
2198                 //if (LittleShort(in->side))
2199                 //      surface->flags |= SURF_PLANEBACK;
2200                 //surface->plane = loadmodel->brush.data_planes + planenum;
2201
2202                 surface->num_firstvertex = totalverts;
2203                 surface->num_vertices = numedges;
2204                 surface->num_firsttriangle = totaltris;
2205                 surface->num_triangles = numedges - 2;
2206                 totalverts += numedges;
2207                 totaltris += numedges - 2;
2208
2209                 // convert edges back to a normal polygon
2210                 for (i = 0;i < surface->num_vertices;i++)
2211                 {
2212                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2213                         float s, t;
2214                         if (lindex > 0)
2215                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2216                         else
2217                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2218                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2219                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2220                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2221                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2222                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2223                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2224                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2225                 }
2226
2227                 for (i = 0;i < surface->num_triangles;i++)
2228                 {
2229                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2230                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2231                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2232                 }
2233
2234                 // compile additional data about the surface geometry
2235                 Mod_BuildNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_normal3f, true);
2236                 Mod_BuildTextureVectorsFromNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2237                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2238
2239                 // generate surface extents information
2240                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2241                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2242                 for (i = 1;i < surface->num_vertices;i++)
2243                 {
2244                         for (j = 0;j < 2;j++)
2245                         {
2246                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2247                                 texmins[j] = min(texmins[j], val);
2248                                 texmaxs[j] = max(texmaxs[j], val);
2249                         }
2250                 }
2251                 for (i = 0;i < 2;i++)
2252                 {
2253                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2254                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2255                 }
2256
2257                 smax = surface->lightmapinfo->extents[0] >> 4;
2258                 tmax = surface->lightmapinfo->extents[1] >> 4;
2259                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2260                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2261
2262                 // lighting info
2263                 for (i = 0;i < MAXLIGHTMAPS;i++)
2264                         surface->lightmapinfo->styles[i] = in->styles[i];
2265                 surface->lightmaptexture = NULL;
2266                 surface->deluxemaptexture = r_texture_blanknormalmap;
2267                 i = LittleLong(in->lightofs);
2268                 if (i == -1)
2269                 {
2270                         surface->lightmapinfo->samples = NULL;
2271                         // give non-lightmapped water a 1x white lightmap
2272                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2273                         {
2274                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2275                                 surface->lightmapinfo->styles[0] = 0;
2276                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2277                         }
2278                 }
2279                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2280                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2281                 else // LordHavoc: white lighting (bsp version 29)
2282                 {
2283                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2284                         if (loadmodel->brushq1.nmaplightdata)
2285                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2286                 }
2287
2288                 // check if we should apply a lightmap to this
2289                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2290                 {
2291                         int i, iu, iv, lightmapx, lightmapy;
2292                         float u, v, ubase, vbase, uscale, vscale;
2293
2294                         if (ssize > 256 || tsize > 256)
2295                                 Host_Error("Bad surface extents");
2296                         // force lightmap upload on first time seeing the surface
2297                         surface->cached_dlight = true;
2298                         // stainmap for permanent marks on walls
2299                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2300                         // clear to white
2301                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2302
2303                         // find a place for this lightmap
2304                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2305                         {
2306                                 // allocate a texture pool if we need it
2307                                 if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
2308                                         loadmodel->texturepool = R_AllocTexturePool();
2309                                 // could not find room, make a new lightmap
2310                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2311                                 if (loadmodel->brushq1.nmaplightdata)
2312                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2313                                 lightmapnumber++;
2314                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2315                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2316                         }
2317
2318                         surface->lightmaptexture = lightmaptexture;
2319                         surface->deluxemaptexture = deluxemaptexture;
2320                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2321                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2322
2323                         ubase = lightmapx * lightmaptexcoordscale;
2324                         vbase = lightmapy * lightmaptexcoordscale;
2325                         uscale = lightmaptexcoordscale;
2326                         vscale = lightmaptexcoordscale;
2327
2328                         for (i = 0;i < surface->num_vertices;i++)
2329                         {
2330                                 u = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
2331                                 v = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
2332                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2333                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2334                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2335                                 iu = (int) u;
2336                                 iv = (int) v;
2337                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2338                         }
2339                 }
2340         }
2341 }
2342
2343 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2344 {
2345         //if (node->parent)
2346         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2347         node->parent = parent;
2348         if (node->plane)
2349         {
2350                 // this is a node, recurse to children
2351                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2352                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2353                 // combine supercontents of children
2354                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2355         }
2356         else
2357         {
2358                 int j;
2359                 mleaf_t *leaf = (mleaf_t *)node;
2360                 // if this is a leaf, calculate supercontents mask from all collidable
2361                 // primitives in the leaf (brushes and collision surfaces)
2362                 // also flag if the leaf contains any collision surfaces
2363                 leaf->combinedsupercontents = 0;
2364                 // combine the supercontents values of all brushes in this leaf
2365                 for (j = 0;j < leaf->numleafbrushes;j++)
2366                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2367                 // check if this leaf contains any collision surfaces (q3 patches)
2368                 for (j = 0;j < leaf->numleafsurfaces;j++)
2369                 {
2370                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2371                         if (surface->num_collisiontriangles)
2372                         {
2373                                 leaf->containscollisionsurfaces = true;
2374                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2375                         }
2376                 }
2377         }
2378 }
2379
2380 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2381 {
2382         int                     i, j, count, p;
2383         dnode_t         *in;
2384         mnode_t         *out;
2385
2386         in = (dnode_t *)(mod_base + l->fileofs);
2387         if (l->filelen % sizeof(*in))
2388                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2389         count = l->filelen / sizeof(*in);
2390         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2391
2392         loadmodel->brush.data_nodes = out;
2393         loadmodel->brush.num_nodes = count;
2394
2395         for ( i=0 ; i<count ; i++, in++, out++)
2396         {
2397                 for (j=0 ; j<3 ; j++)
2398                 {
2399                         out->mins[j] = LittleShort(in->mins[j]);
2400                         out->maxs[j] = LittleShort(in->maxs[j]);
2401                 }
2402
2403                 p = LittleLong(in->planenum);
2404                 out->plane = loadmodel->brush.data_planes + p;
2405
2406                 out->firstsurface = LittleShort(in->firstface);
2407                 out->numsurfaces = LittleShort(in->numfaces);
2408
2409                 for (j=0 ; j<2 ; j++)
2410                 {
2411                         p = LittleShort(in->children[j]);
2412                         if (p >= 0)
2413                                 out->children[j] = loadmodel->brush.data_nodes + p;
2414                         else
2415                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2416                 }
2417         }
2418
2419         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2420 }
2421
2422 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2423 {
2424         dleaf_t *in;
2425         mleaf_t *out;
2426         int i, j, count, p;
2427
2428         in = (dleaf_t *)(mod_base + l->fileofs);
2429         if (l->filelen % sizeof(*in))
2430                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2431         count = l->filelen / sizeof(*in);
2432         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2433
2434         loadmodel->brush.data_leafs = out;
2435         loadmodel->brush.num_leafs = count;
2436         // get visleafs from the submodel data
2437         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2438         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2439         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2440         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2441
2442         for ( i=0 ; i<count ; i++, in++, out++)
2443         {
2444                 for (j=0 ; j<3 ; j++)
2445                 {
2446                         out->mins[j] = LittleShort(in->mins[j]);
2447                         out->maxs[j] = LittleShort(in->maxs[j]);
2448                 }
2449
2450                 // FIXME: this function could really benefit from some error checking
2451
2452                 out->contents = LittleLong(in->contents);
2453
2454                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2455                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2456                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2457                 {
2458                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2459                         out->firstleafsurface = NULL;
2460                         out->numleafsurfaces = 0;
2461                 }
2462
2463                 out->clusterindex = i - 1;
2464                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2465                         out->clusterindex = -1;
2466
2467                 p = LittleLong(in->visofs);
2468                 // ignore visofs errors on leaf 0 (solid)
2469                 if (p >= 0 && out->clusterindex >= 0)
2470                 {
2471                         if (p >= loadmodel->brushq1.num_compressedpvs)
2472                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2473                         else
2474                                 Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, loadmodel->brush.data_pvsclusters + out->clusterindex * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (out->clusterindex + 1) * loadmodel->brush.num_pvsclusterbytes);
2475                 }
2476
2477                 for (j = 0;j < 4;j++)
2478                         out->ambient_sound_level[j] = in->ambient_level[j];
2479
2480                 // FIXME: Insert caustics here
2481         }
2482 }
2483
2484 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2485 {
2486         int i, j;
2487         mleaf_t *leaf;
2488         const unsigned char *pvs;
2489         // check all liquid leafs to see if they can see into empty leafs, if any
2490         // can we can assume this map supports r_wateralpha
2491         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2492         {
2493                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && (leaf->clusterindex >= 0 && loadmodel->brush.data_pvsclusters))
2494                 {
2495                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2496                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2497                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2498                                         return true;
2499                 }
2500         }
2501         return false;
2502 }
2503
2504 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2505 {
2506         dclipnode_t *in, *out;
2507         int                     i, count;
2508         hull_t          *hull;
2509
2510         in = (dclipnode_t *)(mod_base + l->fileofs);
2511         if (l->filelen % sizeof(*in))
2512                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2513         count = l->filelen / sizeof(*in);
2514         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2515
2516         loadmodel->brushq1.clipnodes = out;
2517         loadmodel->brushq1.numclipnodes = count;
2518
2519         for (i = 1; i < hullinfo->numhulls; i++)
2520         {
2521                 hull = &loadmodel->brushq1.hulls[i];
2522                 hull->clipnodes = out;
2523                 hull->firstclipnode = 0;
2524                 hull->lastclipnode = count-1;
2525                 hull->planes = loadmodel->brush.data_planes;
2526                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2527                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2528                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2529                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2530                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2531                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2532                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2533         }
2534
2535         for (i=0 ; i<count ; i++, out++, in++)
2536         {
2537                 out->planenum = LittleLong(in->planenum);
2538                 out->children[0] = LittleShort(in->children[0]);
2539                 out->children[1] = LittleShort(in->children[1]);
2540                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2541                         Host_Error("Corrupt clipping hull(out of range planenum)");
2542                 if (out->children[0] >= count || out->children[1] >= count)
2543                         Host_Error("Corrupt clipping hull(out of range child)");
2544         }
2545 }
2546
2547 //Duplicate the drawing hull structure as a clipping hull
2548 static void Mod_Q1BSP_MakeHull0(void)
2549 {
2550         mnode_t         *in;
2551         dclipnode_t *out;
2552         int                     i;
2553         hull_t          *hull;
2554
2555         hull = &loadmodel->brushq1.hulls[0];
2556
2557         in = loadmodel->brush.data_nodes;
2558         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2559
2560         hull->clipnodes = out;
2561         hull->firstclipnode = 0;
2562         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2563         hull->planes = loadmodel->brush.data_planes;
2564
2565         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2566         {
2567                 out->planenum = in->plane - loadmodel->brush.data_planes;
2568                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2569                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2570         }
2571 }
2572
2573 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2574 {
2575         int i, j;
2576         short *in;
2577
2578         in = (short *)(mod_base + l->fileofs);
2579         if (l->filelen % sizeof(*in))
2580                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2581         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2582         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2583
2584         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2585         {
2586                 j = (unsigned) LittleShort(in[i]);
2587                 if (j >= loadmodel->num_surfaces)
2588                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2589                 loadmodel->brush.data_leafsurfaces[i] = j;
2590         }
2591 }
2592
2593 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2594 {
2595         int             i;
2596         int             *in;
2597
2598         in = (int *)(mod_base + l->fileofs);
2599         if (l->filelen % sizeof(*in))
2600                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2601         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2602         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2603
2604         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2605                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2606 }
2607
2608
2609 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2610 {
2611         int                     i;
2612         mplane_t        *out;
2613         dplane_t        *in;
2614
2615         in = (dplane_t *)(mod_base + l->fileofs);
2616         if (l->filelen % sizeof(*in))
2617                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2618
2619         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2620         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2621
2622         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2623         {
2624                 out->normal[0] = LittleFloat(in->normal[0]);
2625                 out->normal[1] = LittleFloat(in->normal[1]);
2626                 out->normal[2] = LittleFloat(in->normal[2]);
2627                 out->dist = LittleFloat(in->dist);
2628
2629                 PlaneClassify(out);
2630         }
2631 }
2632
2633 static void Mod_Q1BSP_LoadMapBrushes(void)
2634 {
2635 #if 0
2636 // unfinished
2637         int submodel, numbrushes;
2638         qboolean firstbrush;
2639         char *text, *maptext;
2640         char mapfilename[MAX_QPATH];
2641         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2642         strlcat (mapfilename, ".map", sizeof (mapfilename));
2643         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2644         if (!maptext)
2645                 return;
2646         text = maptext;
2647         if (!COM_ParseTokenConsole(&data))
2648                 return; // error
2649         submodel = 0;
2650         for (;;)
2651         {
2652                 if (!COM_ParseTokenConsole(&data))
2653                         break;
2654                 if (com_token[0] != '{')
2655                         return; // error
2656                 // entity
2657                 firstbrush = true;
2658                 numbrushes = 0;
2659                 maxbrushes = 256;
2660                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2661                 for (;;)
2662                 {
2663                         if (!COM_ParseTokenConsole(&data))
2664                                 return; // error
2665                         if (com_token[0] == '}')
2666                                 break; // end of entity
2667                         if (com_token[0] == '{')
2668                         {
2669                                 // brush
2670                                 if (firstbrush)
2671                                 {
2672                                         if (submodel)
2673                                         {
2674                                                 if (submodel > loadmodel->brush.numsubmodels)
2675                                                 {
2676                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2677                                                         model = NULL;
2678                                                 }
2679                                                 else
2680                                                         model = loadmodel->brush.submodels[submodel];
2681                                         }
2682                                         else
2683                                                 model = loadmodel;
2684                                 }
2685                                 for (;;)
2686                                 {
2687                                         if (!COM_ParseTokenConsole(&data))
2688                                                 return; // error
2689                                         if (com_token[0] == '}')
2690                                                 break; // end of brush
2691                                         // each brush face should be this format:
2692                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2693                                         // FIXME: support hl .map format
2694                                         for (pointnum = 0;pointnum < 3;pointnum++)
2695                                         {
2696                                                 COM_ParseTokenConsole(&data);
2697                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2698                                                 {
2699                                                         COM_ParseTokenConsole(&data);
2700                                                         point[pointnum][componentnum] = atof(com_token);
2701                                                 }
2702                                                 COM_ParseTokenConsole(&data);
2703                                         }
2704                                         COM_ParseTokenConsole(&data);
2705                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2706                                         COM_ParseTokenConsole(&data);
2707                                         //scroll_s = atof(com_token);
2708                                         COM_ParseTokenConsole(&data);
2709                                         //scroll_t = atof(com_token);
2710                                         COM_ParseTokenConsole(&data);
2711                                         //rotate = atof(com_token);
2712                                         COM_ParseTokenConsole(&data);
2713                                         //scale_s = atof(com_token);
2714                                         COM_ParseTokenConsole(&data);
2715                                         //scale_t = atof(com_token);
2716                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2717                                         VectorNormalizeDouble(planenormal);
2718                                         planedist = DotProduct(point[0], planenormal);
2719                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2720                                 }
2721                                 continue;
2722                         }
2723                 }
2724         }
2725 #endif
2726 }
2727
2728
2729 #define MAX_PORTALPOINTS 64
2730
2731 typedef struct portal_s
2732 {
2733         mplane_t plane;
2734         mnode_t *nodes[2];              // [0] = front side of plane
2735         struct portal_s *next[2];
2736         int numpoints;
2737         double points[3*MAX_PORTALPOINTS];
2738         struct portal_s *chain; // all portals are linked into a list
2739 }
2740 portal_t;
2741
2742 static portal_t *portalchain;
2743
2744 /*
2745 ===========
2746 AllocPortal
2747 ===========
2748 */
2749 static portal_t *AllocPortal(void)
2750 {
2751         portal_t *p;
2752         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2753         p->chain = portalchain;
2754         portalchain = p;
2755         return p;
2756 }
2757
2758 static void FreePortal(portal_t *p)
2759 {
2760         Mem_Free(p);
2761 }
2762
2763 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2764 {
2765         // process only nodes (leafs already had their box calculated)
2766         if (!node->plane)
2767                 return;
2768
2769         // calculate children first
2770         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2771         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2772
2773         // make combined bounding box from children
2774         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2775         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2776         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2777         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2778         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2779         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2780 }
2781
2782 static void Mod_Q1BSP_FinalizePortals(void)
2783 {
2784         int i, j, numportals, numpoints;
2785         portal_t *p, *pnext;
2786         mportal_t *portal;
2787         mvertex_t *point;
2788         mleaf_t *leaf, *endleaf;
2789
2790         // tally up portal and point counts and recalculate bounding boxes for all
2791         // leafs (because qbsp is very sloppy)
2792         leaf = loadmodel->brush.data_leafs;
2793         endleaf = leaf + loadmodel->brush.num_leafs;
2794         for (;leaf < endleaf;leaf++)
2795         {
2796                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2797                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2798         }
2799         p = portalchain;
2800         numportals = 0;
2801         numpoints = 0;
2802         while (p)
2803         {
2804                 // note: this check must match the one below or it will usually corrupt memory
2805                 // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
2806                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2807                 {
2808                         numportals += 2;
2809                         numpoints += p->numpoints * 2;
2810                 }
2811                 p = p->chain;
2812         }
2813         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2814         loadmodel->brush.num_portals = numportals;
2815         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2816         loadmodel->brush.num_portalpoints = numpoints;
2817         // clear all leaf portal chains
2818         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2819                 loadmodel->brush.data_leafs[i].portals = NULL;
2820         // process all portals in the global portal chain, while freeing them
2821         portal = loadmodel->brush.data_portals;
2822         point = loadmodel->brush.data_portalpoints;
2823         p = portalchain;
2824         portalchain = NULL;
2825         while (p)
2826         {
2827                 pnext = p->chain;
2828
2829                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2830                 {
2831                         // note: this check must match the one above or it will usually corrupt memory
2832                         // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
2833                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2834                         {
2835                                 // first make the back to front portal(forward portal)
2836                                 portal->points = point;
2837                                 portal->numpoints = p->numpoints;
2838                                 portal->plane.dist = p->plane.dist;
2839                                 VectorCopy(p->plane.normal, portal->plane.normal);
2840                                 portal->here = (mleaf_t *)p->nodes[1];
2841                                 portal->past = (mleaf_t *)p->nodes[0];
2842                                 // copy points
2843                                 for (j = 0;j < portal->numpoints;j++)
2844                                 {
2845                                         VectorCopy(p->points + j*3, point->position);
2846                                         point++;
2847                                 }
2848                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2849                                 PlaneClassify(&portal->plane);
2850
2851                                 // link into leaf's portal chain
2852                                 portal->next = portal->here->portals;
2853                                 portal->here->portals = portal;
2854
2855                                 // advance to next portal
2856                                 portal++;
2857
2858                                 // then make the front to back portal(backward portal)
2859                                 portal->points = point;
2860                                 portal->numpoints = p->numpoints;
2861                                 portal->plane.dist = -p->plane.dist;
2862                                 VectorNegate(p->plane.normal, portal->plane.normal);
2863                                 portal->here = (mleaf_t *)p->nodes[0];
2864                                 portal->past = (mleaf_t *)p->nodes[1];
2865                                 // copy points
2866                                 for (j = portal->numpoints - 1;j >= 0;j--)
2867                                 {
2868                                         VectorCopy(p->points + j*3, point->position);
2869                                         point++;
2870                                 }
2871                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2872                                 PlaneClassify(&portal->plane);
2873
2874                                 // link into leaf's portal chain
2875                                 portal->next = portal->here->portals;
2876                                 portal->here->portals = portal;
2877
2878                                 // advance to next portal
2879                                 portal++;
2880                         }
2881                         // add the portal's polygon points to the leaf bounding boxes
2882                         for (i = 0;i < 2;i++)
2883                         {
2884                                 leaf = (mleaf_t *)p->nodes[i];
2885                                 for (j = 0;j < p->numpoints;j++)
2886                                 {
2887                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2888                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2889                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2890                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2891                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2892                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2893                                 }
2894                         }
2895                 }
2896                 FreePortal(p);
2897                 p = pnext;
2898         }
2899         // now recalculate the node bounding boxes from the leafs
2900         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2901 }
2902
2903 /*
2904 =============
2905 AddPortalToNodes
2906 =============
2907 */
2908 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2909 {
2910         if (!front)
2911                 Host_Error("AddPortalToNodes: NULL front node");
2912         if (!back)
2913                 Host_Error("AddPortalToNodes: NULL back node");
2914         if (p->nodes[0] || p->nodes[1])
2915                 Host_Error("AddPortalToNodes: already included");
2916         // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
2917
2918         p->nodes[0] = front;
2919         p->next[0] = (portal_t *)front->portals;
2920         front->portals = (mportal_t *)p;
2921
2922         p->nodes[1] = back;
2923         p->next[1] = (portal_t *)back->portals;
2924         back->portals = (mportal_t *)p;
2925 }
2926
2927 /*
2928 =============
2929 RemovePortalFromNode
2930 =============
2931 */
2932 static void RemovePortalFromNodes(portal_t *portal)
2933 {
2934         int i;
2935         mnode_t *node;
2936         void **portalpointer;
2937         portal_t *t;
2938         for (i = 0;i < 2;i++)
2939         {
2940                 node = portal->nodes[i];
2941
2942                 portalpointer = (void **) &node->portals;
2943                 while (1)
2944                 {
2945                         t = (portal_t *)*portalpointer;
2946                         if (!t)
2947                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2948
2949                         if (t == portal)
2950                         {
2951                                 if (portal->nodes[0] == node)
2952                                 {
2953                                         *portalpointer = portal->next[0];
2954                                         portal->nodes[0] = NULL;
2955                                 }
2956                                 else if (portal->nodes[1] == node)
2957                                 {
2958                                         *portalpointer = portal->next[1];
2959                                         portal->nodes[1] = NULL;
2960                                 }
2961                                 else
2962                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2963                                 break;
2964                         }
2965
2966                         if (t->nodes[0] == node)
2967                                 portalpointer = (void **) &t->next[0];
2968                         else if (t->nodes[1] == node)
2969                                 portalpointer = (void **) &t->next[1];
2970                         else
2971                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2972                 }
2973         }
2974 }
2975
2976 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2977 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2978 {
2979         int i, side;
2980         mnode_t *front, *back, *other_node;
2981         mplane_t clipplane, *plane;
2982         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2983         int numfrontpoints, numbackpoints;
2984         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2985
2986         // if a leaf, we're done
2987         if (!node->plane)
2988                 return;
2989
2990         plane = node->plane;
2991
2992         front = node->children[0];
2993         back = node->children[1];
2994         if (front == back)
2995                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2996
2997         // create the new portal by generating a polygon for the node plane,
2998         // and clipping it by all of the other portals(which came from nodes above this one)
2999         nodeportal = AllocPortal();
3000         nodeportal->plane = *plane;
3001
3002         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
3003         PolygonD_QuadForPlane(nodeportal->points, nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist, 1024.0*1024.0*1024.0);
3004         nodeportal->numpoints = 4;
3005         side = 0;       // shut up compiler warning
3006         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3007         {
3008                 clipplane = portal->plane;
3009                 if (portal->nodes[0] == portal->nodes[1])
3010                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3011                 if (portal->nodes[0] == node)
3012                         side = 0;
3013                 else if (portal->nodes[1] == node)
3014                 {
3015                         clipplane.dist = -clipplane.dist;
3016                         VectorNegate(clipplane.normal, clipplane.normal);
3017                         side = 1;
3018                 }
3019                 else
3020                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3021
3022                 for (i = 0;i < nodeportal->numpoints*3;i++)
3023                         frontpoints[i] = nodeportal->points[i];
3024                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
3025                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3026                         break;
3027         }
3028
3029         if (nodeportal->numpoints < 3)
3030         {
3031                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3032                 nodeportal->numpoints = 0;
3033         }
3034         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3035         {
3036                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3037                 nodeportal->numpoints = 0;
3038         }
3039
3040         AddPortalToNodes(nodeportal, front, back);
3041
3042         // split the portals of this node along this node's plane and assign them to the children of this node
3043         // (migrating the portals downward through the tree)
3044         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3045         {
3046                 if (portal->nodes[0] == portal->nodes[1])
3047                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3048                 if (portal->nodes[0] == node)
3049                         side = 0;
3050                 else if (portal->nodes[1] == node)
3051                         side = 1;
3052                 else
3053                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3054                 nextportal = portal->next[side];
3055                 if (!portal->numpoints)
3056                         continue;
3057
3058                 other_node = portal->nodes[!side];
3059                 RemovePortalFromNodes(portal);
3060
3061                 // cut the portal into two portals, one on each side of the node plane
3062                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
3063
3064                 if (!numfrontpoints)
3065                 {
3066                         if (side == 0)
3067                                 AddPortalToNodes(portal, back, other_node);
3068                         else
3069                                 AddPortalToNodes(portal, other_node, back);
3070                         continue;
3071                 }
3072                 if (!numbackpoints)
3073                 {
3074                         if (side == 0)
3075                                 AddPortalToNodes(portal, front, other_node);
3076                         else
3077                                 AddPortalToNodes(portal, other_node, front);
3078                         continue;
3079                 }
3080
3081                 // the portal is split
3082                 splitportal = AllocPortal();
3083                 temp = splitportal->chain;
3084                 *splitportal = *portal;
3085                 splitportal->chain = temp;
3086                 for (i = 0;i < numbackpoints*3;i++)
3087                         splitportal->points[i] = backpoints[i];
3088                 splitportal->numpoints = numbackpoints;
3089                 for (i = 0;i < numfrontpoints*3;i++)
3090                         portal->points[i] = frontpoints[i];
3091                 portal->numpoints = numfrontpoints;
3092
3093                 if (side == 0)
3094                 {
3095                         AddPortalToNodes(portal, front, other_node);
3096                         AddPortalToNodes(splitportal, back, other_node);
3097                 }
3098                 else
3099                 {
3100                         AddPortalToNodes(portal, other_node, front);
3101                         AddPortalToNodes(splitportal, other_node, back);
3102                 }
3103         }
3104
3105         Mod_Q1BSP_RecursiveNodePortals(front);
3106         Mod_Q1BSP_RecursiveNodePortals(back);
3107 }
3108
3109 static void Mod_Q1BSP_MakePortals(void)
3110 {
3111         portalchain = NULL;
3112         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
3113         Mod_Q1BSP_FinalizePortals();
3114 }
3115
3116 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
3117 {
3118         int i, j, stylecounts[256], totalcount, remapstyles[256];
3119         msurface_t *surface;
3120         memset(stylecounts, 0, sizeof(stylecounts));
3121         for (i = 0;i < model->nummodelsurfaces;i++)
3122         {
3123                 surface = model->data_surfaces + model->firstmodelsurface + i;
3124                 for (j = 0;j < MAXLIGHTMAPS;j++)
3125                         stylecounts[surface->lightmapinfo->styles[j]]++;
3126         }
3127         totalcount = 0;
3128         model->brushq1.light_styles = 0;
3129         for (i = 0;i < 255;i++)
3130         {
3131                 if (stylecounts[i])
3132                 {
3133                         remapstyles[i] = model->brushq1.light_styles++;
3134                         totalcount += stylecounts[i] + 1;
3135                 }
3136         }
3137         if (!totalcount)
3138                 return;
3139         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3140         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3141         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3142         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3143         model->brushq1.light_styles = 0;
3144         for (i = 0;i < 255;i++)
3145                 if (stylecounts[i])
3146                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3147         j = 0;
3148         for (i = 0;i < model->brushq1.light_styles;i++)
3149         {
3150                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3151                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3152         }
3153         for (i = 0;i < model->nummodelsurfaces;i++)
3154         {
3155                 surface = model->data_surfaces + model->firstmodelsurface + i;
3156                 for (j = 0;j < MAXLIGHTMAPS;j++)
3157                         if (surface->lightmapinfo->styles[j] != 255)
3158                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3159         }
3160         j = 0;
3161         for (i = 0;i < model->brushq1.light_styles;i++)
3162         {
3163                 *model->brushq1.light_styleupdatechains[i] = NULL;
3164                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3165                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3166         }
3167 }
3168
3169 //Returns PVS data for a given point
3170 //(note: can return NULL)
3171 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3172 {
3173         mnode_t *node;
3174         node = model->brush.data_nodes;
3175         while (node->plane)
3176                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3177         if (((mleaf_t *)node)->clusterindex >= 0)
3178                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3179         else
3180                 return NULL;
3181 }
3182
3183 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3184 {
3185         while (node->plane)
3186         {
3187                 float d = PlaneDiff(org, node->plane);
3188                 if (d > radius)
3189                         node = node->children[0];
3190                 else if (d < -radius)
3191                         node = node->children[1];
3192                 else
3193                 {
3194                         // go down both sides
3195                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3196                         node = node->children[1];
3197                 }
3198         }
3199         // if this leaf is in a cluster, accumulate the pvs bits
3200         if (((mleaf_t *)node)->clusterindex >= 0)
3201         {
3202                 int i;
3203                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3204                 for (i = 0;i < pvsbytes;i++)
3205                         pvsbuffer[i] |= pvs[i];
3206         }
3207 }
3208
3209 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3210 //of the given point.
3211 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3212 {
3213         int bytes = model->brush.num_pvsclusterbytes;
3214         bytes = min(bytes, pvsbufferlength);
3215         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3216         {
3217                 memset(pvsbuffer, 0xFF, bytes);
3218                 return bytes;
3219         }
3220         memset(pvsbuffer, 0, bytes);
3221         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3222         return bytes;
3223 }
3224
3225 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3226 {
3227         vec3_t size;
3228         const hull_t *hull;
3229
3230         VectorSubtract(inmaxs, inmins, size);
3231         if (cmodel->brush.ismcbsp)
3232         {
3233                 if (size[0] < 3)
3234                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3235                 else if (size[2] < 48) // pick the nearest of 40 or 56
3236                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3237                 else
3238                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3239         }
3240         else if (cmodel->brush.ishlbsp)
3241         {
3242                 if (size[0] < 3)
3243                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3244                 else if (size[0] <= 32)
3245                 {
3246                         if (size[2] < 54) // pick the nearest of 36 or 72
3247                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3248                         else
3249                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3250                 }
3251                 else
3252                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3253         }
3254         else
3255         {
3256                 if (size[0] < 3)
3257                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3258                 else if (size[0] <= 32)
3259                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3260                 else
3261                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3262         }
3263         VectorCopy(inmins, outmins);
3264         VectorAdd(inmins, hull->clip_size, outmaxs);
3265 }
3266
3267 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3268 {
3269         int i, j, k;
3270         dheader_t *header;
3271         dmodel_t *bm;
3272         mempool_t *mainmempool;
3273         float dist, modelyawradius, modelradius, *vec;
3274         msurface_t *surface;
3275         int numshadowmeshtriangles;
3276         dheader_t _header;
3277         hullinfo_t hullinfo;
3278
3279         mod->type = mod_brushq1;
3280
3281         if (!memcmp (buffer, "MCBSPpad", 8))
3282         {
3283                 unsigned char   *index;
3284
3285                 mod->brush.ismcbsp = true;
3286                 mod->brush.ishlbsp = false;
3287
3288                 mod_base = (unsigned char*)buffer;
3289
3290                 index = mod_base;
3291                 index += 8;
3292                 i = SB_ReadInt (&index);
3293                 if (i != MCBSPVERSION)
3294                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3295
3296         // read hull info
3297                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3298                 hullinfo.filehulls = hullinfo.numhulls;
3299                 VectorClear (hullinfo.hullsizes[0][0]);
3300                 VectorClear (hullinfo.hullsizes[0][1]);
3301                 for (i = 1; i < hullinfo.numhulls; i++)
3302                 {
3303                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3304                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3305                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3306                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3307                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3308                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3309                 }
3310
3311         // read lumps
3312                 _header.version = 0;
3313                 for (i = 0; i < HEADER_LUMPS; i++)
3314                 {
3315                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3316                         _header.lumps[i].filelen = SB_ReadInt (&index);
3317                 }
3318
3319                 header = &_header;
3320         }
3321         else
3322         {
3323                 header = (dheader_t *)buffer;
3324
3325                 i = LittleLong(header->version);
3326                 if (i != BSPVERSION && i != 30)
3327                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3328                 mod->brush.ishlbsp = i == 30;
3329                 mod->brush.ismcbsp = false;
3330
3331         // fill in hull info
3332                 VectorClear (hullinfo.hullsizes[0][0]);
3333                 VectorClear (hullinfo.hullsizes[0][1]);
3334                 if (mod->brush.ishlbsp)
3335                 {
3336                         hullinfo.numhulls = 4;
3337                         hullinfo.filehulls = 4;
3338                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3339                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3340                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3341                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3342                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3343                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3344                 }
3345                 else
3346                 {
3347                         hullinfo.numhulls = 3;
3348                         hullinfo.filehulls = 4;
3349                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3350                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3351                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3352                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3353                 }
3354
3355         // read lumps
3356                 mod_base = (unsigned char*)buffer;
3357                 for (i = 0; i < HEADER_LUMPS; i++)
3358                 {
3359                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3360                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3361                 }
3362         }
3363
3364         mod->soundfromcenter = true;
3365         mod->TraceBox = Mod_Q1BSP_TraceBox;
3366         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3367         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3368         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3369         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3370         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3371         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3372         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3373         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3374         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3375         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3376         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3377         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3378         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3379         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3380
3381         if (loadmodel->isworldmodel)
3382         {
3383                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3384                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3385         }
3386
3387 // load into heap
3388
3389         // store which lightmap format to use
3390         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3391
3392         mod->brush.qw_md4sum = 0;
3393         mod->brush.qw_md4sum2 = 0;
3394         for (i = 0;i < HEADER_LUMPS;i++)
3395         {
3396                 if (i == LUMP_ENTITIES)
3397                         continue;
3398                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3399                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3400                         continue;
3401                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3402         }
3403
3404         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3405         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3406         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3407         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3408         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3409         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3410         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3411         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3412         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3413         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3414         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3415         // load submodels before leafs because they contain the number of vis leafs
3416         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3417         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3418         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3419         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3420
3421         // check if the map supports transparent water rendering
3422         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3423
3424         if (mod->brushq1.data_compressedpvs)
3425                 Mem_Free(mod->brushq1.data_compressedpvs);
3426         mod->brushq1.data_compressedpvs = NULL;
3427         mod->brushq1.num_compressedpvs = 0;
3428
3429         Mod_Q1BSP_MakeHull0();
3430         Mod_Q1BSP_MakePortals();
3431
3432         mod->numframes = 2;             // regular and alternate animation
3433         mod->numskins = 1;
3434
3435         mainmempool = mod->mempool;
3436
3437         // make a single combined shadow mesh to allow optimized shadow volume creation
3438         numshadowmeshtriangles = 0;
3439         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3440         {
3441                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3442                 numshadowmeshtriangles += surface->num_triangles;
3443         }
3444         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3445         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3446                 Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
3447         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3448         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3449
3450         if (loadmodel->brush.numsubmodels)
3451                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3452
3453         if (loadmodel->isworldmodel)
3454         {
3455                 // clear out any stale submodels or worldmodels lying around
3456                 // if we did this clear before now, an error might abort loading and
3457                 // leave things in a bad state
3458                 Mod_RemoveStaleWorldModels(loadmodel);
3459         }
3460
3461         // LordHavoc: to clear the fog around the original quake submodel code, I
3462         // will explain:
3463         // first of all, some background info on the submodels:
3464         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3465         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3466         // now the weird for loop itself:
3467         // the loop functions in an odd way, on each iteration it sets up the
3468         // current 'mod' model (which despite the confusing code IS the model of
3469         // the number i), at the end of the loop it duplicates the model to become
3470         // the next submodel, and loops back to set up the new submodel.
3471
3472         // LordHavoc: now the explanation of my sane way (which works identically):
3473         // set up the world model, then on each submodel copy from the world model
3474         // and set up the submodel with the respective model info.
3475         for (i = 0;i < mod->brush.numsubmodels;i++)
3476         {
3477                 // LordHavoc: this code was originally at the end of this loop, but
3478                 // has been transformed to something more readable at the start here.
3479
3480                 if (i > 0)
3481                 {
3482                         char name[10];
3483                         // LordHavoc: only register submodels if it is the world
3484                         // (prevents external bsp models from replacing world submodels with
3485                         //  their own)
3486                         if (!loadmodel->isworldmodel)
3487                                 continue;
3488                         // duplicate the basic information
3489                         sprintf(name, "*%i", i);
3490                         mod = Mod_FindName(name);
3491                         // copy the base model to this one
3492                         *mod = *loadmodel;
3493                         // rename the clone back to its proper name
3494                         strlcpy(mod->name, name, sizeof(mod->name));
3495                         // textures and memory belong to the main model
3496                         mod->texturepool = NULL;
3497                         mod->mempool = NULL;
3498                 }
3499
3500                 mod->brush.submodel = i;
3501
3502                 if (loadmodel->brush.submodels)
3503                         loadmodel->brush.submodels[i] = mod;
3504
3505                 bm = &mod->brushq1.submodels[i];
3506
3507                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3508                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3509                 {
3510                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3511                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3512                 }
3513
3514                 mod->firstmodelsurface = bm->firstface;
3515                 mod->nummodelsurfaces = bm->numfaces;
3516
3517                 // make the model surface list (used by shadowing/lighting)
3518                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3519                 for (j = 0;j < mod->nummodelsurfaces;j++)
3520                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3521
3522                 // this gets altered below if sky is used
3523                 mod->DrawSky = NULL;
3524                 mod->Draw = R_Q1BSP_Draw;
3525                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3526                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3527                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3528                 mod->DrawLight = R_Q1BSP_DrawLight;
3529                 if (i != 0)
3530                 {
3531                         mod->brush.TraceLineOfSight = NULL;
3532                         mod->brush.GetPVS = NULL;
3533                         mod->brush.FatPVS = NULL;
3534                         mod->brush.BoxTouchingPVS = NULL;
3535                         mod->brush.BoxTouchingLeafPVS = NULL;
3536                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3537                         mod->brush.FindBoxClusters = NULL;
3538                         mod->brush.LightPoint = NULL;
3539                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3540                 }
3541                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3542                 if (mod->nummodelsurfaces)
3543                 {
3544                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3545                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3546                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3547                         modelyawradius = 0;
3548                         modelradius = 0;
3549                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3550                         {
3551                                 // we only need to have a drawsky function if it is used(usually only on world model)
3552                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3553                                         mod->DrawSky = R_Q1BSP_DrawSky;
3554                                 // calculate bounding shapes
3555                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3556                                 {
3557                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3558                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3559                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3560                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3561                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3562                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3563                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3564                                         if (modelyawradius < dist)
3565                                                 modelyawradius = dist;
3566                                         dist += vec[2]*vec[2];
3567                                         if (modelradius < dist)
3568                                                 modelradius = dist;
3569                                 }
3570                         }
3571                         modelyawradius = sqrt(modelyawradius);
3572                         modelradius = sqrt(modelradius);
3573                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3574                         mod->yawmins[2] = mod->normalmins[2];
3575                         mod->yawmaxs[2] = mod->normalmaxs[2];
3576                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3577                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3578                         mod->radius = modelradius;
3579                         mod->radius2 = modelradius * modelradius;
3580                 }
3581                 else
3582                 {
3583                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3584                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3585                 }
3586                 //mod->brushq1.num_visleafs = bm->visleafs;
3587         }
3588
3589         Mod_Q1BSP_LoadMapBrushes();
3590
3591         //Mod_Q1BSP_ProcessLightList();
3592
3593         if (developer.integer >= 10)
3594                 Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals);
3595 }
3596
3597 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3598 {
3599 }
3600
3601 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3602 {
3603 /*
3604         d_t *in;
3605         m_t *out;
3606         int i, count;
3607
3608         in = (void *)(mod_base + l->fileofs);
3609         if (l->filelen % sizeof(*in))
3610                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3611         count = l->filelen / sizeof(*in);
3612         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3613
3614         loadmodel-> = out;
3615         loadmodel->num = count;
3616
3617         for (i = 0;i < count;i++, in++, out++)
3618         {
3619         }
3620 */
3621 }
3622
3623 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3624 {
3625 /*
3626         d_t *in;
3627         m_t *out;
3628         int i, count;
3629
3630         in = (void *)(mod_base + l->fileofs);
3631         if (l->filelen % sizeof(*in))
3632                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3633         count = l->filelen / sizeof(*in);
3634         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3635
3636         loadmodel-> = out;
3637         loadmodel->num = count;
3638
3639         for (i = 0;i < count;i++, in++, out++)
3640         {
3641         }
3642 */
3643 }
3644
3645 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3646 {
3647 /*
3648         d_t *in;
3649         m_t *out;
3650         int i, count;
3651
3652         in = (void *)(mod_base + l->fileofs);
3653         if (l->filelen % sizeof(*in))
3654                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3655         count = l->filelen / sizeof(*in);
3656         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3657
3658         loadmodel-> = out;
3659         loadmodel->num = count;
3660
3661         for (i = 0;i < count;i++, in++, out++)
3662         {
3663         }
3664 */
3665 }
3666
3667 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3668 {
3669 /*
3670         d_t *in;
3671         m_t *out;
3672         int i, count;
3673
3674         in = (void *)(mod_base + l->fileofs);
3675         if (l->filelen % sizeof(*in))
3676                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3677         count = l->filelen / sizeof(*in);
3678         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3679
3680         loadmodel-> = out;
3681         loadmodel->num = count;
3682
3683         for (i = 0;i < count;i++, in++, out++)
3684         {
3685         }
3686 */
3687 }
3688
3689 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3690 {
3691 /*
3692         d_t *in;
3693         m_t *out;
3694         int i, count;
3695
3696         in = (void *)(mod_base + l->fileofs);
3697         if (l->filelen % sizeof(*in))
3698                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3699         count = l->filelen / sizeof(*in);
3700         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3701
3702         loadmodel-> = out;
3703         loadmodel->num = count;
3704
3705         for (i = 0;i < count;i++, in++, out++)
3706         {
3707         }
3708 */
3709 }
3710
3711 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3712 {
3713 /*
3714         d_t *in;
3715         m_t *out;
3716         int i, count;
3717
3718         in = (void *)(mod_base + l->fileofs);
3719         if (l->filelen % sizeof(*in))
3720                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3721         count = l->filelen / sizeof(*in);
3722         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3723
3724         loadmodel-> = out;
3725         loadmodel->num = count;
3726
3727         for (i = 0;i < count;i++, in++, out++)
3728         {
3729         }
3730 */
3731 }
3732
3733 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3734 {
3735 /*
3736         d_t *in;
3737         m_t *out;
3738         int i, count;
3739
3740         in = (void *)(mod_base + l->fileofs);
3741         if (l->filelen % sizeof(*in))
3742                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3743         count = l->filelen / sizeof(*in);
3744         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3745
3746         loadmodel-> = out;
3747         loadmodel->num = count;
3748
3749         for (i = 0;i < count;i++, in++, out++)
3750         {
3751         }
3752 */
3753 }
3754
3755 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3756 {
3757 /*
3758         d_t *in;
3759         m_t *out;
3760         int i, count;
3761
3762         in = (void *)(mod_base + l->fileofs);
3763         if (l->filelen % sizeof(*in))
3764                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3765         count = l->filelen / sizeof(*in);
3766         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3767
3768         loadmodel-> = out;
3769         loadmodel->num = count;
3770
3771         for (i = 0;i < count;i++, in++, out++)
3772         {
3773         }
3774 */
3775 }
3776
3777 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3778 {
3779 /*
3780         d_t *in;
3781         m_t *out;
3782         int i, count;
3783
3784         in = (void *)(mod_base + l->fileofs);
3785         if (l->filelen % sizeof(*in))
3786                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3787         count = l->filelen / sizeof(*in);
3788         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3789
3790         loadmodel-> = out;
3791         loadmodel->num = count;
3792
3793         for (i = 0;i < count;i++, in++, out++)
3794         {
3795         }
3796 */
3797 }
3798
3799 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3800 {
3801 /*
3802         d_t *in;
3803         m_t *out;
3804         int i, count;
3805
3806         in = (void *)(mod_base + l->fileofs);
3807         if (l->filelen % sizeof(*in))
3808                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3809         count = l->filelen / sizeof(*in);
3810         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3811
3812         loadmodel-> = out;
3813         loadmodel->num = count;
3814
3815         for (i = 0;i < count;i++, in++, out++)
3816         {
3817         }
3818 */
3819 }
3820
3821 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3822 {
3823 /*
3824         d_t *in;
3825         m_t *out;
3826         int i, count;
3827
3828         in = (void *)(mod_base + l->fileofs);
3829         if (l->filelen % sizeof(*in))
3830                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3831         count = l->filelen / sizeof(*in);
3832         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3833
3834         loadmodel-> = out;
3835         loadmodel->num = count;
3836
3837         for (i = 0;i < count;i++, in++, out++)
3838         {
3839         }
3840 */
3841 }
3842
3843 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3844 {
3845 /*
3846         d_t *in;
3847         m_t *out;
3848         int i, count;
3849
3850         in = (void *)(mod_base + l->fileofs);
3851         if (l->filelen % sizeof(*in))
3852                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3853         count = l->filelen / sizeof(*in);
3854         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3855
3856         loadmodel-> = out;
3857         loadmodel->num = count;
3858
3859         for (i = 0;i < count;i++, in++, out++)
3860         {
3861         }
3862 */
3863 }
3864
3865 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3866 {
3867 /*
3868         d_t *in;
3869         m_t *out;
3870         int i, count;
3871
3872         in = (void *)(mod_base + l->fileofs);
3873         if (l->filelen % sizeof(*in))
3874                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3875         count = l->filelen / sizeof(*in);
3876         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3877
3878         loadmodel-> = out;
3879         loadmodel->num = count;
3880
3881         for (i = 0;i < count;i++, in++, out++)
3882         {
3883         }
3884 */
3885 }
3886
3887 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3888 {
3889 /*
3890         d_t *in;
3891         m_t *out;
3892         int i, count;
3893
3894         in = (void *)(mod_base + l->fileofs);
3895         if (l->filelen % sizeof(*in))
3896                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3897         count = l->filelen / sizeof(*in);
3898         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3899
3900         loadmodel-> = out;
3901         loadmodel->num = count;
3902
3903         for (i = 0;i < count;i++, in++, out++)
3904         {
3905         }
3906 */
3907 }
3908
3909 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3910 {
3911 /*
3912         d_t *in;
3913         m_t *out;
3914         int i, count;
3915
3916         in = (void *)(mod_base + l->fileofs);
3917         if (l->filelen % sizeof(*in))
3918                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3919         count = l->filelen / sizeof(*in);
3920         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3921
3922         loadmodel-> = out;
3923         loadmodel->num = count;
3924
3925         for (i = 0;i < count;i++, in++, out++)
3926         {
3927         }
3928 */
3929 }
3930
3931 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3932 {
3933 /*
3934         d_t *in;
3935         m_t *out;
3936         int i, count;
3937
3938         in = (void *)(mod_base + l->fileofs);
3939         if (l->filelen % sizeof(*in))
3940                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3941         count = l->filelen / sizeof(*in);
3942         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3943
3944         loadmodel-> = out;
3945         loadmodel->num = count;
3946
3947         for (i = 0;i < count;i++, in++, out++)
3948         {
3949         }
3950 */
3951 }
3952
3953 static void Mod_Q2BSP_LoadModels(lump_t *l)
3954 {
3955 /*
3956         d_t *in;
3957         m_t *out;
3958         int i, count;
3959
3960         in = (void *)(mod_base + l->fileofs);
3961         if (l->filelen % sizeof(*in))
3962                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3963         count = l->filelen / sizeof(*in);
3964         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3965
3966         loadmodel-> = out;
3967         loadmodel->num = count;
3968
3969         for (i = 0;i < count;i++, in++, out++)
3970         {
3971         }
3972 */
3973 }
3974
3975 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3976 {
3977         int i;
3978         q2dheader_t *header;
3979
3980         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3981
3982         mod->type = mod_brushq2;
3983
3984         header = (q2dheader_t *)buffer;
3985
3986         i = LittleLong(header->version);
3987         if (i != Q2BSPVERSION)
3988                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3989         mod->brush.ishlbsp = false;
3990         mod->brush.ismcbsp = false;
3991         if (loadmodel->isworldmodel)
3992         {
3993                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3994                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3995         }
3996
3997         mod_base = (unsigned char *)header;
3998
3999         // swap all the lumps
4000         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4001                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4002
4003         // store which lightmap format to use
4004         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
4005
4006         mod->brush.qw_md4sum = 0;
4007         mod->brush.qw_md4sum2 = 0;
4008         for (i = 0;i < Q2HEADER_LUMPS;i++)
4009         {
4010                 if (i == Q2LUMP_ENTITIES)
4011                         continue;
4012                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4013                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4014                         continue;
4015                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4016         }
4017
4018         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4019         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4020         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4021         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4022         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4023         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4024         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4025         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4026         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4027         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4028         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4029         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4030         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4031         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4032         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4033         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4034         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4035         // LordHavoc: must go last because this makes the submodels
4036         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4037 }
4038
4039 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
4040 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
4041
4042 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4043 {
4044         const char *data;
4045         char key[128], value[MAX_INPUTLINE];
4046         float v[3];
4047         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4048         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4049         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4050         if (!l->filelen)
4051                 return;
4052         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
4053         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4054         data = loadmodel->brush.entities;
4055         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4056         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
4057         {
4058                 while (1)
4059                 {
4060                         if (!COM_ParseTokenConsole(&data))
4061                                 break; // error
4062                         if (com_token[0] == '}')
4063                                 break; // end of worldspawn
4064                         if (com_token[0] == '_')
4065                                 strlcpy(key, com_token + 1, sizeof(key));
4066                         else
4067                                 strlcpy(key, com_token, sizeof(key));
4068                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4069                                 key[strlen(key)-1] = 0;
4070                         if (!COM_ParseTokenConsole(&data))
4071                                 break; // error
4072                         strlcpy(value, com_token, sizeof(value));
4073                         if (!strcmp("gridsize", key))
4074                         {
4075                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4076                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4077                         }
4078                 }
4079         }
4080 }
4081
4082 // FIXME: make MAXSHADERS dynamic
4083 #define Q3SHADER_MAXSHADERS 4096
4084 #define Q3SHADER_MAXLAYERS 8
4085
4086 typedef struct q3shaderinfo_layer_s
4087 {
4088         int alphatest;
4089         int clampmap;
4090         float framerate;
4091         int numframes;
4092         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
4093         int blendfunc[2];
4094         qboolean rgbgenvertex;
4095         qboolean alphagenvertex;
4096 }
4097 q3shaderinfo_layer_t;
4098
4099 typedef struct q3shaderinfo_s
4100 {
4101         char name[Q3PATHLENGTH];
4102         int surfaceparms;
4103         int textureflags;
4104         int numlayers;
4105         qboolean lighting;
4106         qboolean vertexalpha;
4107         qboolean textureblendalpha;
4108         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
4109         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
4110         char skyboxname[Q3PATHLENGTH];
4111 }
4112 q3shaderinfo_t;
4113
4114 int q3shaders_numshaders;
4115 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
4116
4117 static void Mod_Q3BSP_LoadShaders(void)
4118 {
4119         int j;
4120         int fileindex;
4121         fssearch_t *search;
4122         char *f;
4123         const char *text;
4124         q3shaderinfo_t *shader;
4125         q3shaderinfo_layer_t *layer;
4126         int numparameters;
4127         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
4128         search = FS_Search("scripts/*.shader", true, false);
4129         if (!search)
4130                 return;
4131         q3shaders_numshaders = 0;
4132         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
4133         {
4134                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
4135                 if (!f)
4136                         continue;
4137                 while (COM_ParseToken(&text, false))
4138                 {
4139                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4140                         {
4141                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4142                                 break;
4143                         }
4144                         shader = q3shaders_shaders + q3shaders_numshaders++;
4145                         memset(shader, 0, sizeof(*shader));
4146                         strlcpy(shader->name, com_token, sizeof(shader->name));
4147                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4148                         {
4149                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4150                                 break;
4151                         }
4152                         while (COM_ParseToken(&text, false))
4153                         {
4154                                 if (!strcasecmp(com_token, "}"))
4155                                         break;
4156                                 if (!strcasecmp(com_token, "{"))
4157                                 {
4158                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4159                                         {
4160                                                 layer = shader->layers + shader->numlayers++;
4161                                                 layer->rgbgenvertex = false;
4162                                                 layer->alphagenvertex = false;
4163                                                 layer->blendfunc[0] = GL_ONE;
4164                                                 layer->blendfunc[1] = GL_ZERO;
4165                                         }
4166                                         else
4167                                                 layer = NULL;
4168                                         while (COM_ParseToken(&text, false))
4169                                         {
4170                                                 if (!strcasecmp(com_token, "}"))
4171                                                         break;
4172                                                 if (!strcasecmp(com_token, "\n"))
4173                                                         continue;
4174                                                 if (layer == NULL)
4175                                                         continue;
4176                                                 numparameters = 0;
4177                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4178                                                 {
4179                                                         if (j < TEXTURE_MAXFRAMES + 4)
4180                                                         {
4181                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4182                                                                 numparameters = j + 1;
4183                                                         }
4184                                                         if (!COM_ParseToken(&text, true))
4185                                                                 break;
4186                                                 }
4187                                                 if (developer.integer >= 100)
4188                                                 {
4189                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4190                                                         for (j = 0;j < numparameters;j++)
4191                                                                 Con_Printf(" %s", parameter[j]);
4192                                                         Con_Print("\n");
4193                                                 }
4194                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4195                                                 {
4196                                                         if (numparameters == 2)
4197                                                         {
4198                                                                 if (!strcasecmp(parameter[1], "add"))
4199                                                                 {
4200                                                                         layer->blendfunc[0] = GL_ONE;
4201                                                                         layer->blendfunc[1] = GL_ONE;
4202                                                                 }
4203                                                                 else if (!strcasecmp(parameter[1], "filter"))
4204                                                                 {
4205                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4206                                                                         layer->blendfunc[1] = GL_ZERO;
4207                                                                 }
4208                                                                 else if (!strcasecmp(parameter[1], "blend"))
4209                                                                 {
4210                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4211                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4212                                                                 }
4213                                                         }
4214                                                         else if (numparameters == 3)
4215                                                         {
4216                                                                 int k;
4217                                                                 for (k = 0;k < 2;k++)
4218                                                                 {
4219                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4220                                                                                 layer->blendfunc[k] = GL_ONE;
4221                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4222                                                                                 layer->blendfunc[k] = GL_ZERO;
4223                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4224                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4225                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4226                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4227                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4228                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4229                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4230                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4231                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4232                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4233                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4234                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4235                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4236                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4237                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4238                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4239                                                                         else
4240                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4241                                                                 }
4242                                                         }
4243                                                 }
4244                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4245                                                         layer->alphatest = true;
4246                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4247                                                 {
4248                                                         if (!strcasecmp(parameter[0], "clampmap"))
4249                                                                 layer->clampmap = true;
4250                                                         layer->numframes = 1;
4251                                                         layer->framerate = 1;
4252                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4253                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4254                                                                 shader->lighting = true;
4255                                                 }
4256                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4257                                                 {
4258                                                         int i;
4259                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4260                                                         layer->framerate = atof(parameter[1]);
4261                                                         for (i = 0;i < layer->numframes;i++)
4262                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4263                                                 }
4264                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4265                                                         layer->rgbgenvertex = true;
4266                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4267                                                         layer->alphagenvertex = true;
4268                                                 // break out a level if it was }
4269                                                 if (!strcasecmp(com_token, "}"))
4270                                                         break;
4271                                         }
4272                                         if (layer->rgbgenvertex)
4273                                                 shader->lighting = true;
4274                                         if (layer->alphagenvertex)
4275                                         {
4276                                                 if (layer == shader->layers + 0)
4277                                                 {
4278                                                         // vertex controlled transparency
4279                                                         shader->vertexalpha = true;
4280                                                 }
4281                                                 else
4282                                                 {
4283                                                         // multilayer terrain shader or similar
4284                                                         shader->textureblendalpha = true;
4285                                                 }
4286                                         }
4287                                         continue;
4288                                 }
4289                                 numparameters = 0;
4290                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4291                                 {
4292                                         if (j < TEXTURE_MAXFRAMES + 4)
4293                                         {
4294                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4295                                                 numparameters = j + 1;
4296                                         }
4297                                         if (!COM_ParseToken(&text, true))
4298                                                 break;
4299                                 }
4300                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4301                                         break;
4302                                 if (developer.integer >= 100)
4303                                 {
4304                                         Con_Printf("%s: ", shader->name);
4305                                         for (j = 0;j < numparameters;j++)
4306                                                 Con_Printf(" %s", parameter[j]);
4307                                         Con_Print("\n");
4308                                 }
4309                                 if (numparameters < 1)
4310                                         continue;
4311                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4312                                 {
4313                                         if (!strcasecmp(parameter[1], "alphashadow"))
4314                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4315                                         else if (!strcasecmp(parameter[1], "areaportal"))
4316                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4317                                         else if (!strcasecmp(parameter[1], "botclip"))
4318                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4319                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4320                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4321                                         else if (!strcasecmp(parameter[1], "detail"))
4322                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4323                                         else if (!strcasecmp(parameter[1], "donotenter"))
4324                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4325                                         else if (!strcasecmp(parameter[1], "dust"))
4326                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4327                                         else if (!strcasecmp(parameter[1], "hint"))
4328                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4329                                         else if (!strcasecmp(parameter[1], "fog"))
4330                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4331                                         else if (!strcasecmp(parameter[1], "lava"))
4332                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4333                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4334                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4335                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4336                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4337                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4338                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4339                                         else if (!strcasecmp(parameter[1], "nodamage"))
4340                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4341                                         else if (!strcasecmp(parameter[1], "nodlight"))
4342                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4343                                         else if (!strcasecmp(parameter[1], "nodraw"))
4344                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4345                                         else if (!strcasecmp(parameter[1], "nodrop"))
4346                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4347                                         else if (!strcasecmp(parameter[1], "noimpact"))
4348                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4349                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4350                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4351                                         else if (!strcasecmp(parameter[1], "nomarks"))
4352                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4353                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4354                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4355                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4356                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4357                                         else if (!strcasecmp(parameter[1], "origin"))
4358                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4359                                         else if (!strcasecmp(parameter[1], "playerclip"))
4360                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4361                                         else if (!strcasecmp(parameter[1], "sky"))
4362                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4363                                         else if (!strcasecmp(parameter[1], "slick"))
4364                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4365                                         else if (!strcasecmp(parameter[1], "slime"))
4366                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4367                                         else if (!strcasecmp(parameter[1], "structural"))
4368                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4369                                         else if (!strcasecmp(parameter[1], "trans"))
4370                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4371                                         else if (!strcasecmp(parameter[1], "water"))
4372                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4373                                         else if (!strcasecmp(parameter[1], "pointlight"))
4374                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4375                                         else if (!strcasecmp(parameter[1], "antiportal"))
4376                                                 shader->surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
4377                                         else
4378                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4379                                 }
4380                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4381                                 {
4382                                         // some q3 skies don't have the sky parm set
4383                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4384                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4385                                 }
4386                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4387                                 {
4388                                         // some q3 skies don't have the sky parm set
4389                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4390                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4391                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4392                                 }
4393                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4394                                 {
4395                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4396                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4397                                 }
4398                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4399                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4400                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4401                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4402                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4403                                 {
4404                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4405                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4406                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4407                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4408                                 }
4409                         }
4410                         // identify if this is a blended terrain shader or similar
4411                         if (shader->numlayers)
4412                         {
4413                                 shader->backgroundlayer = NULL;
4414                                 shader->primarylayer = shader->layers + 0;
4415                                 if ((shader->layers[0].blendfunc[0] == GL_ONE       && shader->layers[0].blendfunc[1] == GL_ZERO                && !shader->layers[0].alphatest)
4416                                 && ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA && !shader->layers[0].alphatest)
4417                                 ||  (shader->layers[1].blendfunc[0] == GL_ONE       && shader->layers[1].blendfunc[1] == GL_ZERO                &&  shader->layers[1].alphatest)))
4418                                 {
4419                                         // terrain blending or other effects
4420                                         shader->backgroundlayer = shader->layers + 0;
4421                                         shader->primarylayer = shader->layers + 1;
4422                                 }
4423                                 // now see if the lightmap came first, and if so choose the second texture instead
4424                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4425                                 {
4426                                         shader->backgroundlayer = NULL;
4427                                         shader->primarylayer = shader->layers + 1;
4428                                 }
4429                         }
4430                 }
4431                 Mem_Free(f);
4432         }
4433 }
4434
4435 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4436 {
4437         int i;
4438         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4439                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4440                         return q3shaders_shaders + i;
4441         return NULL;
4442 }
4443
4444 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4445 {
4446         q3dtexture_t *in;
4447         texture_t *out;
4448         int i, count, c;
4449
4450         in = (q3dtexture_t *)(mod_base + l->fileofs);
4451         if (l->filelen % sizeof(*in))
4452                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4453         count = l->filelen / sizeof(*in);
4454         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4455
4456         loadmodel->data_textures = out;
4457         loadmodel->num_textures = count;
4458
4459         // parse the Q3 shader files
4460         Mod_Q3BSP_LoadShaders();
4461
4462         c = 0;
4463         for (i = 0;i < count;i++, in++, out++)
4464         {
4465                 q3shaderinfo_t *shader;
4466                 strlcpy (out->name, in->name, sizeof (out->name));
4467                 out->surfaceflags = LittleLong(in->surfaceflags);
4468                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4469                 shader = Mod_Q3BSP_LookupShader(out->name);
4470                 if (shader)
4471                 {
4472                         out->surfaceparms = shader->surfaceparms;
4473                         out->textureflags = shader->textureflags;
4474                         out->basematerialflags = 0;
4475                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4476                         {
4477                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4478                                 if (shader->skyboxname[0])
4479                                 {
4480                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4481                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4482                                 }
4483                         }
4484                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4485                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4486                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4487                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOSHADOW;
4488                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4489                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4490                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4491                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4492                         else
4493                                 out->basematerialflags |= MATERIALFLAG_WALL;
4494                         if (shader->layers[0].alphatest)
4495                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
4496                         if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
4497                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
4498                         if (shader->textureflags & (Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
4499                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW;
4500                         out->customblendfunc[0] = GL_ONE;
4501                         out->customblendfunc[1] = GL_ZERO;
4502                         if (shader->numlayers > 0)
4503                         {
4504                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4505                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4506 /*
4507 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4508 * additive               GL_ONE GL_ONE
4509   additive weird         GL_ONE GL_SRC_ALPHA
4510   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4511 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4512   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4513   brighten               GL_DST_COLOR GL_ONE
4514   brighten               GL_ONE GL_SRC_COLOR
4515   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4516   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4517 * modulate               GL_DST_COLOR GL_ZERO
4518 * modulate               GL_ZERO GL_SRC_COLOR
4519   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4520   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4521   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4522 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4523 * no blend               GL_ONE GL_ZERO
4524   nothing                GL_ZERO GL_ONE
4525 */
4526                                 // if not opaque, figure out what blendfunc to use
4527                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4528                                 {
4529                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4530                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4531                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4532                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4533                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4534                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4535                                         else
4536                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4537                                 }
4538                         }
4539                         if (!shader->lighting)
4540                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4541                         if (shader->primarylayer && cls.state != ca_dedicated)
4542                         {
4543                                 int j;
4544                                 out->numskinframes = shader->primarylayer->numframes;
4545                                 out->skinframerate = shader->primarylayer->framerate;
4546                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4547                                         if (!(out->skinframes[j] = R_SkinFrame_LoadExternal(shader->primarylayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP) | (shader->primarylayer->clampmap ? TEXF_CLAMP : 0))))
4548                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4549                         }
4550                         if (shader->backgroundlayer && cls.state != ca_dedicated)
4551                         {
4552                                 int j;
4553                                 out->backgroundnumskinframes = shader->backgroundlayer->numframes;
4554                                 out->backgroundskinframerate = shader->backgroundlayer->framerate;
4555                                 for (j = 0;j < shader->backgroundlayer->numframes;j++)
4556                                 {
4557                                         if (!(out->backgroundskinframes[j] = R_SkinFrame_LoadExternal(shader->backgroundlayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP) | (shader->backgroundlayer->clampmap ? TEXF_CLAMP : 0))))
4558                                         {
4559                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->backgroundlayer->texturename[j], j, out->name);
4560                                                 out->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
4561                                         }
4562                                 }
4563                         }
4564                 }
4565                 else if (!strcmp(out->name, "noshader"))
4566                         out->surfaceparms = 0;
4567                 else
4568                 {
4569                         c++;
4570                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4571                         out->surfaceparms = 0;
4572                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4573                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4574                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4575                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4576                         else
4577                                 out->basematerialflags |= MATERIALFLAG_WALL;
4578                         // these are defaults
4579                         //if (!strncmp(out->name, "textures/skies/", 15))
4580                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4581                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4582                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4583                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4584                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4585                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4586                         if (cls.state != ca_dedicated)
4587                                 if (!(out->skinframes[0] = R_SkinFrame_LoadExternal(out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP)))
4588                                         Con_DPrintf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4589                 }
4590                 // init the animation variables
4591                 out->currentframe = out;
4592                 if (!out->skinframes[0])
4593                         out->skinframes[0] = R_SkinFrame_LoadMissing();
4594                 out->currentskinframe = out->skinframes[0];
4595                 out->backgroundcurrentskinframe = out->backgroundskinframes[0];
4596         }
4597         if (c)
4598                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4599 }
4600
4601 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4602 {
4603         q3dplane_t *in;
4604         mplane_t *out;
4605         int i, count;
4606
4607         in = (q3dplane_t *)(mod_base + l->fileofs);
4608         if (l->filelen % sizeof(*in))
4609                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4610         count = l->filelen / sizeof(*in);
4611         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4612
4613         loadmodel->brush.data_planes = out;
4614         loadmodel->brush.num_planes = count;
4615
4616         for (i = 0;i < count;i++, in++, out++)
4617         {
4618                 out->normal[0] = LittleFloat(in->normal[0]);
4619                 out->normal[1] = LittleFloat(in->normal[1]);
4620                 out->normal[2] = LittleFloat(in->normal[2]);
4621                 out->dist = LittleFloat(in->dist);
4622                 PlaneClassify(out);
4623         }
4624 }
4625
4626 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4627 {
4628         q3dbrushside_t *in;
4629         q3mbrushside_t *out;
4630         int i, n, count;
4631
4632         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4633         if (l->filelen % sizeof(*in))
4634                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4635         count = l->filelen / sizeof(*in);
4636         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4637
4638         loadmodel->brush.data_brushsides = out;
4639         loadmodel->brush.num_brushsides = count;
4640
4641         for (i = 0;i < count;i++, in++, out++)
4642         {
4643                 n = LittleLong(in->planeindex);
4644                 if (n < 0 || n >= loadmodel->brush.num_planes)
4645                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4646                 out->plane = loadmodel->brush.data_planes + n;
4647                 n = LittleLong(in->textureindex);
4648                 if (n < 0 || n >= loadmodel->num_textures)
4649                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4650                 out->texture = loadmodel->data_textures + n;
4651         }
4652 }
4653
4654 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4655 {
4656         q3dbrush_t *in;
4657         q3mbrush_t *out;
4658         int i, j, n, c, count, maxplanes;
4659         colplanef_t *planes;
4660
4661         in = (q3dbrush_t *)(mod_base + l->fileofs);
4662         if (l->filelen % sizeof(*in))
4663                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4664         count = l->filelen / sizeof(*in);
4665         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4666
4667         loadmodel->brush.data_brushes = out;
4668         loadmodel->brush.num_brushes = count;
4669
4670         maxplanes = 0;
4671         planes = NULL;
4672
4673         for (i = 0;i < count;i++, in++, out++)
4674         {
4675                 n = LittleLong(in->firstbrushside);
4676                 c = LittleLong(in->numbrushsides);
4677                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4678                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4679                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4680                 out->numbrushsides = c;
4681                 n = LittleLong(in->textureindex);
4682                 if (n < 0 || n >= loadmodel->num_textures)
4683                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4684                 out->texture = loadmodel->data_textures + n;
4685
4686                 // make a list of mplane_t structs to construct a colbrush from
4687                 if (maxplanes < out->numbrushsides)
4688                 {
4689                         maxplanes = out->numbrushsides;
4690                         if (planes)
4691                                 Mem_Free(planes);
4692                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4693                 }
4694                 for (j = 0;j < out->numbrushsides;j++)
4695                 {
4696                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4697                         planes[j].dist = out->firstbrushside[j].plane->dist;
4698                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4699                         planes[j].texture = out->firstbrushside[j].texture;
4700                 }
4701                 // make the colbrush from the planes
4702                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4703         }
4704         if (planes)
4705                 Mem_Free(planes);
4706 }
4707
4708 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4709 {
4710         q3deffect_t *in;
4711         q3deffect_t *out;
4712         int i, n, count;
4713
4714         in = (q3deffect_t *)(mod_base + l->fileofs);
4715         if (l->filelen % sizeof(*in))
4716                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4717         count = l->filelen / sizeof(*in);
4718         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4719
4720         loadmodel->brushq3.data_effects = out;
4721         loadmodel->brushq3.num_effects = count;
4722
4723         for (i = 0;i < count;i++, in++, out++)
4724         {
4725                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4726                 n = LittleLong(in->brushindex);
4727                 if (n >= loadmodel->brush.num_brushes)
4728                 {
4729                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4730                         n = -1;
4731                 }
4732                 out->brushindex = n;
4733                 out->unknown = LittleLong(in->unknown);
4734         }
4735 }
4736
4737 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4738 {
4739         q3dvertex_t *in;
4740         int i, count;
4741
4742         in = (q3dvertex_t *)(mod_base + l->fileofs);
4743         if (l->filelen % sizeof(*in))
4744                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4745         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4746         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4747         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4748         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4749         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4750         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4751
4752         for (i = 0;i < count;i++, in++)
4753         {
4754                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4755                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4756                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4757                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4758                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4759                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4760                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4761                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4762                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4763                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4764                 // svector/tvector are calculated later in face loading
4765                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4766                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4767                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4768                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4769         }
4770 }
4771
4772 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4773 {
4774         int *in;
4775         int *out;
4776         int i, count;
4777
4778         in = (int *)(mod_base + l->fileofs);
4779         if (l->filelen % sizeof(int[3]))
4780                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4781         count = l->filelen / sizeof(*in);
4782         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4783
4784         loadmodel->brushq3.num_triangles = count / 3;
4785         loadmodel->brushq3.data_element3i = out;
4786
4787         for (i = 0;i < count;i++, in++, out++)
4788         {
4789                 *out = LittleLong(*in);
4790                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4791                 {
4792                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4793                         *out = 0;
4794                 }
4795         }
4796 }
4797
4798 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4799 {
4800         q3dlightmap_t *in;
4801         int i, j, count, power, power2, mask, endlightmap;
4802         unsigned char *c;
4803
4804         if (!l->filelen)
4805                 return;
4806         if (cls.state == ca_dedicated)
4807                 return;
4808         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4809         if (l->filelen % sizeof(*in))
4810                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4811         count = l->filelen / sizeof(*in);
4812         loadmodel->brushq3.num_originallightmaps = count;
4813
4814         // now check the surfaces to see if any of them index an odd numbered
4815         // lightmap, if so this is not a deluxemapped bsp file
4816         //
4817         // also check what lightmaps are actually used, because q3map2 sometimes
4818         // (always?) makes an unused one at the end, which
4819         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4820         // reason when only one lightmap is used, which can throw off the
4821         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4822         // to see if the second lightmap is blank, if so it is not deluxemapped.
4823         loadmodel->brushq3.deluxemapping = !(count & 1);
4824         loadmodel->brushq3.deluxemapping_modelspace = true;
4825         endlightmap = 0;
4826         if (loadmodel->brushq3.deluxemapping)
4827         {
4828                 int facecount = faceslump->filelen / sizeof(q3dface_t);
4829                 q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4830                 for (i = 0;i < facecount;i++)
4831                 {
4832                         j = LittleLong(faces[i].lightmapindex);
4833                         if (j >= 0)
4834                         {
4835                                 endlightmap = max(endlightmap, j + 1);
4836                                 if ((j & 1) || j + 1 >= count)
4837                                 {
4838                                         loadmodel->brushq3.deluxemapping = false;
4839                                         break;
4840                                 }
4841                         }
4842                 }
4843         }
4844         if (endlightmap < 2)
4845                 loadmodel->brushq3.deluxemapping = false;
4846
4847         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4848         // reason when only one lightmap is used, which can throw off the
4849         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4850         // to see if the second lightmap is blank, if so it is not deluxemapped.
4851         if (endlightmap == 1 && count == 2)
4852         {
4853                 c = in[1].rgb;
4854                 for (i = 0;i < 128*128*3;i++)
4855                         if (c[i])
4856                                 break;
4857                 if (i == 128*128*3)
4858                 {
4859                         // all pixels in the unused lightmap were black...
4860                         loadmodel->brushq3.deluxemapping = false;
4861                 }
4862         }
4863
4864         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4865
4866         // figure out what the most reasonable merge power is within limits
4867         loadmodel->brushq3.num_lightmapmergepower = 0;
4868         for (power = 1;power <= mod_q3bsp_lightmapmergepower.integer && (1 << power) <= gl_max_texture_size && (1 << (power * 2)) < 4 * (count >> loadmodel->brushq3.deluxemapping);power++)
4869                 loadmodel->brushq3.num_lightmapmergepower = power;
4870         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4871
4872         loadmodel->brushq3.num_mergedlightmaps = ((count >> loadmodel->brushq3.deluxemapping) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4873         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4874         if (loadmodel->brushq3.deluxemapping)
4875                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4876
4877         // allocate a texture pool if we need it
4878         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4879                 loadmodel->texturepool = R_AllocTexturePool();
4880
4881         j = 128 << loadmodel->brushq3.num_lightmapmergepower;
4882         if (loadmodel->brushq3.data_lightmaps)
4883                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4884                         loadmodel->brushq3.data_lightmaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4885
4886         if (loadmodel->brushq3.data_deluxemaps)
4887                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4888                         loadmodel->brushq3.data_deluxemaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4889
4890         power = loadmodel->brushq3.num_lightmapmergepower;
4891         power2 = power * 2;
4892         mask = (1 << power) - 1;
4893         for (i = 0;i < count;i++)
4894         {
4895                 j = i >> loadmodel->brushq3.deluxemapping;
4896                 if (loadmodel->brushq3.deluxemapping && (i & 1))
4897                         R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4898                 else
4899                         R_UpdateTexture(loadmodel->brushq3.data_lightmaps [j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4900         }
4901 }
4902
4903 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4904 {
4905         q3dface_t *in, *oldin;
4906         msurface_t *out, *oldout;
4907         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4908         float lightmaptcbase[2], lightmaptcscale;
4909         //int *originalelement3i;
4910         //int *originalneighbor3i;
4911         float *originalvertex3f;
4912         //float *originalsvector3f;
4913         //float *originaltvector3f;
4914         float *originalnormal3f;
4915         float *originalcolor4f;
4916         float *originaltexcoordtexture2f;
4917         float *originaltexcoordlightmap2f;
4918         float *v;
4919
4920         in = (q3dface_t *)(mod_base + l->fileofs);
4921         if (l->filelen % sizeof(*in))
4922                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4923         count = l->filelen / sizeof(*in);
4924         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4925
4926         loadmodel->data_surfaces = out;
4927         loadmodel->num_surfaces = count;
4928
4929         i = 0;
4930         oldi = i;
4931         oldin = in;
4932         oldout = out;
4933         meshvertices = 0;
4934         meshtriangles = 0;
4935         for (;i < count;i++, in++, out++)
4936         {
4937                 // check face type first
4938                 type = LittleLong(in->type);
4939                 if (type != Q3FACETYPE_POLYGON
4940                  && type != Q3FACETYPE_PATCH
4941                  && type != Q3FACETYPE_MESH
4942                  && type != Q3FACETYPE_FLARE)
4943                 {
4944                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4945                         continue;
4946                 }
4947
4948                 n = LittleLong(in->textureindex);
4949                 if (n < 0 || n >= loadmodel->num_textures)
4950                 {
4951                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4952                         continue;
4953                 }
4954                 out->texture = loadmodel->data_textures + n;
4955                 n = LittleLong(in->effectindex);
4956                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4957                 {
4958                         if (developer.integer >= 100)
4959                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4960                         n = -1;
4961                 }
4962                 if (n == -1)
4963                         out->effect = NULL;
4964                 else
4965                         out->effect = loadmodel->brushq3.data_effects + n;
4966
4967                 if (cls.state != ca_dedicated)
4968                 {
4969                         out->lightmaptexture = NULL;
4970                         out->deluxemaptexture = r_texture_blanknormalmap;
4971                         n = LittleLong(in->lightmapindex);
4972                         if (n < 0)
4973                                 n = -1;
4974                         else if (n >= loadmodel->brushq3.num_originallightmaps)
4975                         {
4976                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
4977                                 n = -1;
4978                         }
4979                         else
4980                         {
4981                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4982                                 if (loadmodel->brushq3.deluxemapping)
4983                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4984                         }
4985                 }
4986
4987                 firstvertex = LittleLong(in->firstvertex);
4988                 numvertices = LittleLong(in->numvertices);
4989                 firstelement = LittleLong(in->firstelement);
4990                 numtriangles = LittleLong(in->numelements) / 3;
4991                 if (numtriangles * 3 != LittleLong(in->numelements))
4992                 {
4993                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
4994                         continue;
4995                 }
4996                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4997                 {
4998                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
4999                         continue;
5000                 }
5001                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5002                 {
5003                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
5004                         continue;
5005                 }
5006                 switch(type)
5007                 {
5008                 case Q3FACETYPE_POLYGON:
5009                 case Q3FACETYPE_MESH:
5010                         // no processing necessary
5011                         break;
5012                 case Q3FACETYPE_PATCH:
5013                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5014                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5015                         if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
5016                         {
5017                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5018                                 continue;
5019                         }
5020                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5021                         // convert patch to Q3FACETYPE_MESH
5022                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5023                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5024                         // bound to user settings
5025                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5026                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5027                         // bound to sanity settings
5028                         xtess = bound(1, xtess, 1024);
5029                         ytess = bound(1, ytess, 1024);
5030                         // bound to user limit on vertices
5031                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5032                         {
5033                                 if (xtess > ytess)
5034                                         xtess--;
5035                                 else
5036                                         ytess--;
5037                         }
5038                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5039                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5040                         numvertices = finalwidth * finalheight;
5041                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5042                         break;
5043                 case Q3FACETYPE_FLARE:
5044                         if (developer.integer >= 100)
5045                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5046                         // don't render it
5047                         continue;
5048                 }
5049                 out->num_vertices = numvertices;
5050                 out->num_triangles = numtriangles;
5051                 meshvertices += out->num_vertices;
5052                 meshtriangles += out->num_triangles;
5053         }
5054
5055         i = oldi;
5056         in = oldin;
5057         out = oldout;
5058         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5059         meshvertices = 0;
5060         meshtriangles = 0;
5061         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5062         {
5063                 if (out->num_vertices < 3 || out->num_triangles < 1)
5064                         continue;
5065
5066                 type = LittleLong(in->type);
5067                 firstvertex = LittleLong(in->firstvertex);
5068                 firstelement = LittleLong(in->firstelement);
5069                 out->num_firstvertex = meshvertices;
5070                 out->num_firsttriangle = meshtriangles;
5071                 switch(type)
5072                 {
5073                 case Q3FACETYPE_POLYGON:
5074                 case Q3FACETYPE_MESH:
5075                         // no processing necessary, except for lightmap merging
5076                         for (j = 0;j < out->num_vertices;j++)
5077                         {
5078                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5079                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5080                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5081                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5082                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5083                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5084                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5085                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5086                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5087                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5088                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5089                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5090                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5091                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5092                         }
5093                         for (j = 0;j < out->num_triangles*3;j++)
5094                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5095                         break;
5096                 case Q3FACETYPE_PATCH:
5097                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5098                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5099                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5100                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5101                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5102                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5103                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5104                         // convert patch to Q3FACETYPE_MESH
5105                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5106                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5107                         // bound to user settings
5108                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5109                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5110                         // bound to sanity settings
5111                         xtess = bound(1, xtess, 1024);
5112                         ytess = bound(1, ytess, 1024);
5113                         // bound to user limit on vertices
5114                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5115                         {
5116                                 if (xtess > ytess)
5117                                         xtess--;
5118                                 else
5119                                         ytess--;
5120                         }
5121                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5122                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5123                         finalvertices = finalwidth * finalheight;
5124                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5125                         type = Q3FACETYPE_MESH;
5126                         // generate geometry
5127                         // (note: normals are skipped because they get recalculated)
5128                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5129                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5130                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5131                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5132                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5133                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5134                         out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), loadmodel->surfmesh.data_vertex3f);
5135                         if (developer.integer >= 100)
5136                         {
5137                                 if (out->num_triangles < finaltriangles)
5138                                         Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
5139                                 else
5140                                         Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
5141                         }
5142                         // q3map does not put in collision brushes for curves... ugh
5143                         // build the lower quality collision geometry
5144                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5145                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5146                         // bound to user settings
5147                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
5148                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
5149                         // bound to sanity settings
5150                         xtess = bound(1, xtess, 1024);
5151                         ytess = bound(1, ytess, 1024);
5152                         // bound to user limit on vertices
5153                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
5154                         {
5155                                 if (xtess > ytess)
5156                                         xtess--;
5157                                 else
5158                                         ytess--;
5159                         }
5160                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5161                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5162                         finalvertices = finalwidth * finalheight;
5163                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5164
5165                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5166                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5167                         out->num_collisionvertices = finalvertices;
5168                         out->num_collisiontriangles = finaltriangles;
5169                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5170                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5171
5172                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5173                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5174
5175                         oldnumtriangles = out->num_triangles;
5176                         oldnumtriangles2 = out->num_collisiontriangles;
5177                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5178                         if (developer.integer >= 100)
5179                                 Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
5180                         break;
5181                 default:
5182                         break;
5183                 }
5184                 meshvertices += out->num_vertices;
5185                 meshtriangles += out->num_triangles;
5186                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5187                         if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5188                                 invalidelements++;
5189                 if (invalidelements)
5190                 {
5191                         Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
5192                         for (j = 0;j < out->num_triangles * 3;j++)
5193                         {
5194                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5195                                 if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5196                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5197                         }
5198                         Con_Print("\n");
5199                 }
5200                 // calculate a bounding box
5201                 VectorClear(out->mins);
5202                 VectorClear(out->maxs);
5203                 if (out->num_vertices)
5204                 {
5205                         int lightmapindex = LittleLong(in->lightmapindex);
5206                         if (lightmapindex >= 0 && cls.state != ca_dedicated)
5207                         {
5208                                 lightmapindex >>= loadmodel->brushq3.deluxemapping;
5209                                 lightmaptcscale = 1.0f / loadmodel->brushq3.num_lightmapmerge;
5210                                 lightmaptcbase[0] = ((lightmapindex                                             ) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5211                                 lightmaptcbase[1] = ((lightmapindex >> loadmodel->brushq3.num_lightmapmergepower) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5212                                 // modify the lightmap texcoords to match this region of the merged lightmap
5213                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5214                                 {
5215                                         v[0] = v[0] * lightmaptcscale + lightmaptcbase[0];
5216                                         v[1] = v[1] * lightmaptcscale + lightmaptcbase[1];
5217                                 }
5218                         }
5219                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5220                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5221                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5222                         {
5223                                 out->mins[0] = min(out->mins[0], v[0]);
5224                                 out->maxs[0] = max(out->maxs[0], v[0]);
5225                                 out->mins[1] = min(out->mins[1], v[1]);
5226                                 out->maxs[1] = max(out->maxs[1], v[1]);
5227                                 out->mins[2] = min(out->mins[2], v[2]);
5228                                 out->maxs[2] = max(out->maxs[2], v[2]);
5229                         }
5230                         out->mins[0] -= 1.0f;
5231                         out->mins[1] -= 1.0f;
5232                         out->mins[2] -= 1.0f;
5233                         out->maxs[0] += 1.0f;
5234                         out->maxs[1] += 1.0f;
5235                         out->maxs[2] += 1.0f;
5236                 }
5237                 // set lightmap styles for consistency with q1bsp
5238                 //out->lightmapinfo->styles[0] = 0;
5239                 //out->lightmapinfo->styles[1] = 255;
5240                 //out->lightmapinfo->styles[2] = 255;
5241                 //out->lightmapinfo->styles[3] = 255;
5242         }
5243
5244         // for per pixel lighting
5245         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
5246
5247         // free the no longer needed vertex data
5248         loadmodel->brushq3.num_vertices = 0;
5249         if (loadmodel->brushq3.data_vertex3f)
5250                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5251         loadmodel->brushq3.data_vertex3f = NULL;
5252         loadmodel->brushq3.data_normal3f = NULL;
5253         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5254         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5255         loadmodel->brushq3.data_color4f = NULL;
5256         // free the no longer needed triangle data
5257         loadmodel->brushq3.num_triangles = 0;
5258         if (loadmodel->brushq3.data_element3i)
5259                 Mem_Free(loadmodel->brushq3.data_element3i);
5260         loadmodel->brushq3.data_element3i = NULL;
5261 }
5262
5263 static void Mod_Q3BSP_LoadModels(lump_t *l)
5264 {
5265         q3dmodel_t *in;
5266         q3dmodel_t *out;
5267         int i, j, n, c, count;
5268
5269         in = (q3dmodel_t *)(mod_base + l->fileofs);
5270         if (l->filelen % sizeof(*in))
5271                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5272         count = l->filelen / sizeof(*in);
5273         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5274
5275         loadmodel->brushq3.data_models = out;
5276         loadmodel->brushq3.num_models = count;
5277
5278         for (i = 0;i < count;i++, in++, out++)
5279         {
5280                 for (j = 0;j < 3;j++)
5281                 {
5282                         out->mins[j] = LittleFloat(in->mins[j]);
5283                         out->maxs[j] = LittleFloat(in->maxs[j]);
5284                 }
5285                 n = LittleLong(in->firstface);
5286                 c = LittleLong(in->numfaces);
5287                 if (n < 0 || n + c > loadmodel->num_surfaces)
5288                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5289                 out->firstface = n;
5290                 out->numfaces = c;
5291                 n = LittleLong(in->firstbrush);
5292                 c = LittleLong(in->numbrushes);
5293                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5294                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5295                 out->firstbrush = n;
5296                 out->numbrushes = c;
5297         }
5298 }
5299
5300 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5301 {
5302         int *in;
5303         int *out;
5304         int i, n, count;
5305
5306         in = (int *)(mod_base + l->fileofs);
5307         if (l->filelen % sizeof(*in))
5308                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5309         count = l->filelen / sizeof(*in);
5310         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5311
5312         loadmodel->brush.data_leafbrushes = out;
5313         loadmodel->brush.num_leafbrushes = count;
5314
5315         for (i = 0;i < count;i++, in++, out++)
5316         {
5317                 n = LittleLong(*in);
5318                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5319                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5320                 *out = n;
5321         }
5322 }
5323
5324 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5325 {
5326         int *in;
5327         int *out;
5328         int i, n, count;
5329
5330         in = (int *)(mod_base + l->fileofs);
5331         if (l->filelen % sizeof(*in))
5332                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5333         count = l->filelen / sizeof(*in);
5334         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5335
5336         loadmodel->brush.data_leafsurfaces = out;
5337         loadmodel->brush.num_leafsurfaces = count;
5338
5339         for (i = 0;i < count;i++, in++, out++)
5340         {
5341                 n = LittleLong(*in);
5342                 if (n < 0 || n >= loadmodel->num_surfaces)
5343                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5344                 *out = n;
5345         }
5346 }
5347
5348 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5349 {
5350         q3dleaf_t *in;
5351         mleaf_t *out;
5352         int i, j, n, c, count;
5353
5354         in = (q3dleaf_t *)(mod_base + l->fileofs);
5355         if (l->filelen % sizeof(*in))
5356                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5357         count = l->filelen / sizeof(*in);
5358         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5359
5360         loadmodel->brush.data_leafs = out;
5361         loadmodel->brush.num_leafs = count;
5362
5363         for (i = 0;i < count;i++, in++, out++)
5364         {
5365                 out->parent = NULL;
5366                 out->plane = NULL;
5367                 out->clusterindex = LittleLong(in->clusterindex);
5368                 out->areaindex = LittleLong(in->areaindex);
5369                 for (j = 0;j < 3;j++)
5370                 {
5371                         // yes the mins/maxs are ints
5372                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5373                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5374                 }
5375                 n = LittleLong(in->firstleafface);
5376                 c = LittleLong(in->numleaffaces);
5377                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5378                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5379                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5380                 out->numleafsurfaces = c;
5381                 n = LittleLong(in->firstleafbrush);
5382                 c = LittleLong(in->numleafbrushes);
5383                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5384                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5385                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5386                 out->numleafbrushes = c;
5387         }
5388 }
5389
5390 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5391 {
5392         q3dnode_t *in;
5393         mnode_t *out;
5394         int i, j, n, count;
5395
5396         in = (q3dnode_t *)(mod_base + l->fileofs);
5397         if (l->filelen % sizeof(*in))
5398                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5399         count = l->filelen / sizeof(*in);
5400         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5401
5402         loadmodel->brush.data_nodes = out;
5403         loadmodel->brush.num_nodes = count;
5404
5405         for (i = 0;i < count;i++, in++, out++)
5406         {
5407                 out->parent = NULL;
5408                 n = LittleLong(in->planeindex);
5409                 if (n < 0 || n >= loadmodel->brush.num_planes)
5410                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5411                 out->plane = loadmodel->brush.data_planes + n;
5412                 for (j = 0;j < 2;j++)
5413                 {
5414                         n = LittleLong(in->childrenindex[j]);
5415                         if (n >= 0)
5416                         {
5417                                 if (n >= loadmodel->brush.num_nodes)
5418                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5419                                 out->children[j] = loadmodel->brush.data_nodes + n;
5420                         }
5421                         else
5422                         {
5423                                 n = -1 - n;
5424                                 if (n >= loadmodel->brush.num_leafs)
5425                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5426                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5427                         }
5428                 }
5429                 for (j = 0;j < 3;j++)
5430                 {
5431                         // yes the mins/maxs are ints
5432                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5433                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5434                 }
5435         }
5436
5437         // set the parent pointers
5438         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5439 }
5440
5441 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5442 {
5443         q3dlightgrid_t *in;
5444         q3dlightgrid_t *out;
5445         int count;
5446
5447         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5448         if (l->filelen % sizeof(*in))
5449                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5450         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5451         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5452         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5453         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5454         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5455         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5456         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5457         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5458         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5459         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5460         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5461         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5462         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5463         Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
5464         Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
5465
5466         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5467         if (l->filelen)
5468         {
5469                 if (l->filelen < count * (int)sizeof(*in))
5470                         Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5471                 if (l->filelen != count * (int)sizeof(*in))
5472                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5473                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5474                 loadmodel->brushq3.data_lightgrid = out;
5475                 loadmodel->brushq3.num_lightgrid = count;
5476                 // no swapping or validation necessary
5477                 memcpy(out, in, count * (int)sizeof(*out));
5478         }
5479 }
5480
5481 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5482 {
5483         q3dpvs_t *in;
5484         int totalchains;
5485
5486         if (l->filelen == 0)
5487         {
5488                 int i;
5489                 // unvised maps often have cluster indices even without pvs, so check
5490                 // leafs to find real number of clusters
5491                 loadmodel->brush.num_pvsclusters = 1;
5492                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5493                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5494
5495                 // create clusters
5496                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5497                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5498                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5499                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5500                 return;
5501         }
5502
5503         in = (q3dpvs_t *)(mod_base + l->fileofs);
5504         if (l->filelen < 9)
5505                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5506
5507         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5508         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5509         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5510                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5511         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5512         if (l->filelen < totalchains + (int)sizeof(*in))
5513                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
5514
5515         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5516         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5517 }
5518
5519 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5520 {
5521         int i, j, k, index[3];
5522         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5523         q3dlightgrid_t *a, *s;
5524
5525         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5526         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5527
5528         if (!model->brushq3.num_lightgrid)
5529         {
5530                 ambientcolor[0] = stylescale;
5531                 ambientcolor[1] = stylescale;
5532                 ambientcolor[2] = stylescale;
5533                 return;
5534         }
5535
5536         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5537         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5538         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5539         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5540         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5541         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5542         index[0] = (int)floor(transformed[0]);
5543         index[1] = (int)floor(transformed[1]);
5544         index[2] = (int)floor(transformed[2]);
5545         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5546
5547         // now lerp the values
5548         VectorClear(diffusenormal);
5549         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5550         for (k = 0;k < 2;k++)
5551         {
5552                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5553                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5554                         continue;
5555                 for (j = 0;j < 2;j++)
5556                 {
5557                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5558                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5559                                 continue;
5560                         for (i = 0;i < 2;i++)
5561                         {
5562                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5563                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5564                                         continue;
5565                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5566                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5567                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5568                                 pitch = s->diffusepitch * M_PI / 128;
5569                                 yaw = s->diffuseyaw * M_PI / 128;
5570                                 sinpitch = sin(pitch);
5571                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5572                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5573                                 diffusenormal[2] += blend * (cos(pitch));
5574                                 //Con_Printf("blend %f: ambient %i %i %i, diffuse %i %i %i, diffusepitch %i diffuseyaw %i (%f %f, normal %f %f %f)\n", blend, s->ambientrgb[0], s->ambientrgb[1], s->ambientrgb[2], s->diffusergb[0], s->diffusergb[1], s->diffusergb[2], s->diffusepitch, s->diffuseyaw, pitch, yaw, (cos(yaw) * cospitch), (sin(yaw) * cospitch), (-sin(pitch)));
5575                         }
5576                 }
5577         }
5578
5579         // normalize the light direction before turning
5580         VectorNormalize(diffusenormal);
5581         //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
5582 }
5583
5584 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5585 {
5586         int i;
5587         mleaf_t *leaf;
5588         colbrushf_t *brush;
5589         // find which leaf the point is in
5590         while (node->plane)
5591                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5592         // point trace the brushes
5593         leaf = (mleaf_t *)node;
5594         for (i = 0;i < leaf->numleafbrushes;i++)
5595         {
5596                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5597                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5598                 {
5599                         brush->markframe = markframe;
5600                         Collision_TracePointBrushFloat(trace, point, brush);
5601                 }
5602         }
5603         // can't do point traces on curves (they have no thickness)
5604 }
5605
5606 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
5607 {
5608         int i, startside, endside;
5609         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5610         mleaf_t *leaf;
5611         msurface_t *surface;
5612         mplane_t *plane;
5613         colbrushf_t *brush;
5614         // walk the tree until we hit a leaf, recursing for any split cases
5615         while (node->plane)
5616         {
5617                 // abort if this part of the bsp tree can not be hit by this trace
5618 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5619 //                      return;
5620                 plane = node->plane;
5621                 // axial planes are much more common than non-axial, so an optimized
5622                 // axial case pays off here
5623                 if (plane->type < 3)
5624                 {
5625                         dist1 = start[plane->type] - plane->dist;
5626                         dist2 = end[plane->type] - plane->dist;
5627                 }
5628                 else
5629                 {
5630                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5631                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5632                 }
5633                 startside = dist1 < 0;
5634                 endside = dist2 < 0;
5635                 if (startside == endside)
5636                 {
5637                         // most of the time the line fragment is on one side of the plane
5638                         node = node->children[startside];
5639                 }
5640                 else
5641                 {
5642                         // line crosses node plane, split the line
5643                         dist1 = PlaneDiff(linestart, plane);
5644                         dist2 = PlaneDiff(lineend, plane);
5645                         midfrac = dist1 / (dist1 - dist2);
5646                         VectorLerp(linestart, midfrac, lineend, mid);
5647                         // take the near side first
5648                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5649                         // if we found an impact on the front side, don't waste time
5650                         // exploring the far side
5651                         if (midfrac <= trace->realfraction)
5652                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5653                         return;
5654                 }
5655         }
5656         // abort if this part of the bsp tree can not be hit by this trace
5657 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5658 //              return;
5659         // hit a leaf
5660         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5661         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5662         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5663         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5664         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5665         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5666         // line trace the brushes
5667         leaf = (mleaf_t *)node;
5668         for (i = 0;i < leaf->numleafbrushes;i++)
5669         {
5670                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5671                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5672                 {
5673                         brush->markframe = markframe;
5674                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5675                 }
5676         }
5677         // can't do point traces on curves (they have no thickness)
5678         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5679         {
5680                 // line trace the curves
5681                 for (i = 0;i < leaf->numleafsurfaces;i++)
5682                 {
5683                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5684                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5685                         {
5686                                 surface->collisionmarkframe = markframe;
5687                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5688                         }
5689                 }
5690         }
5691 }
5692
5693 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
5694 {
5695         int i;
5696         int sides;
5697         mleaf_t *leaf;
5698         colbrushf_t *brush;
5699         msurface_t *surface;
5700         mplane_t *plane;
5701         float nodesegmentmins[3], nodesegmentmaxs[3];
5702         // walk the tree until we hit a leaf, recursing for any split cases
5703         while (node->plane)
5704         {
5705                 // abort if this part of the bsp tree can not be hit by this trace
5706 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5707 //                      return;
5708                 plane = node->plane;
5709                 // axial planes are much more common than non-axial, so an optimized
5710                 // axial case pays off here
5711                 if (plane->type < 3)
5712                 {
5713                         // this is an axial plane, compare bounding box directly to it and
5714                         // recurse sides accordingly
5715                         // recurse down node sides
5716                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5717                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5718                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5719                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5720                 }
5721                 else
5722                 {
5723                         // this is a non-axial plane, so check if the start and end boxes
5724                         // are both on one side of the plane to handle 'diagonal' cases
5725                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5726                 }
5727                 if (sides == 3)
5728                 {
5729                         // segment crosses plane
5730                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5731                         sides = 2;
5732                 }
5733                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5734                 // in this case we simply pretend the trace hit nothing
5735                 if (sides == 0)
5736                         return; // ERROR: NAN bounding box!
5737                 // take whichever side the segment box is on
5738                 node = node->children[sides - 1];
5739         }
5740         // abort if this part of the bsp tree can not be hit by this trace
5741 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5742 //              return;
5743         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5744         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5745         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5746         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5747         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5748         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5749         // hit a leaf
5750         leaf = (mleaf_t *)node;
5751         for (i = 0;i < leaf->numleafbrushes;i++)
5752         {
5753                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5754                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5755                 {
5756                         brush->markframe = markframe;
5757                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5758                 }
5759         }
5760         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5761         {
5762                 for (i = 0;i < leaf->numleafsurfaces;i++)
5763                 {
5764                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5765                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5766                         {
5767                                 surface->collisionmarkframe = markframe;
5768                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5769                         }
5770                 }
5771         }
5772 }
5773
5774 static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
5775 {
5776         int i;
5777         float segmentmins[3], segmentmaxs[3];
5778         static int markframe = 0;
5779         msurface_t *surface;
5780         q3mbrush_t *brush;
5781         memset(trace, 0, sizeof(*trace));
5782         trace->fraction = 1;
5783         trace->realfraction = 1;
5784         trace->hitsupercontentsmask = hitsupercontentsmask;
5785         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5786         {
5787                 if (VectorCompare(start, end))
5788                 {
5789                         // point trace
5790                         if (model->brush.submodel)
5791                         {
5792                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5793                                         if (brush->colbrushf)
5794                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5795                         }
5796                         else
5797                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5798                 }
5799                 else
5800                 {
5801                         // line trace
5802                         segmentmins[0] = min(start[0], end[0]) - 1;
5803                         segmentmins[1] = min(start[1], end[1]) - 1;
5804                         segmentmins[2] = min(start[2], end[2]) - 1;
5805                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5806                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5807                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5808                         if (model->brush.submodel)
5809                         {
5810                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5811                                         if (brush->colbrushf)
5812                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5813                                 if (mod_q3bsp_curves_collisions.integer)
5814                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5815                                                 if (surface->num_collisiontriangles)
5816                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5817                         }
5818                         else
5819                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5820                 }
5821         }
5822         else
5823         {
5824                 // box trace, performed as brush trace
5825                 colbrushf_t *thisbrush_start, *thisbrush_end;
5826                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5827                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5828                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5829                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5830                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5831                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5832                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5833                 VectorAdd(start, boxmins, boxstartmins);
5834                 VectorAdd(start, boxmaxs, boxstartmaxs);
5835                 VectorAdd(end, boxmins, boxendmins);
5836                 VectorAdd(end, boxmaxs, boxendmaxs);
5837                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5838                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5839                 if (model->brush.submodel)
5840                 {
5841                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5842                                 if (brush->colbrushf)
5843                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5844                         if (mod_q3bsp_curves_collisions.integer)
5845                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5846                                         if (surface->num_collisiontriangles)
5847                                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5848                 }
5849                 else
5850                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5851         }
5852 }
5853
5854 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5855 {
5856         int supercontents = 0;
5857         if (nativecontents & CONTENTSQ3_SOLID)
5858                 supercontents |= SUPERCONTENTS_SOLID;
5859         if (nativecontents & CONTENTSQ3_WATER)
5860                 supercontents |= SUPERCONTENTS_WATER;
5861         if (nativecontents & CONTENTSQ3_SLIME)
5862                 supercontents |= SUPERCONTENTS_SLIME;
5863         if (nativecontents & CONTENTSQ3_LAVA)
5864                 supercontents |= SUPERCONTENTS_LAVA;
5865         if (nativecontents & CONTENTSQ3_BODY)
5866                 supercontents |= SUPERCONTENTS_BODY;
5867         if (nativecontents & CONTENTSQ3_CORPSE)
5868                 supercontents |= SUPERCONTENTS_CORPSE;
5869         if (nativecontents & CONTENTSQ3_NODROP)
5870                 supercontents |= SUPERCONTENTS_NODROP;
5871         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5872                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5873         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5874                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5875         if (nativecontents & CONTENTSQ3_DONOTENTER)
5876                 supercontents |= SUPERCONTENTS_DONOTENTER;
5877         return supercontents;
5878 }
5879
5880 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5881 {
5882         int nativecontents = 0;
5883         if (supercontents & SUPERCONTENTS_SOLID)
5884                 nativecontents |= CONTENTSQ3_SOLID;
5885         if (supercontents & SUPERCONTENTS_WATER)
5886                 nativecontents |= CONTENTSQ3_WATER;
5887         if (supercontents & SUPERCONTENTS_SLIME)
5888                 nativecontents |= CONTENTSQ3_SLIME;
5889         if (supercontents & SUPERCONTENTS_LAVA)
5890                 nativecontents |= CONTENTSQ3_LAVA;
5891         if (supercontents & SUPERCONTENTS_BODY)
5892                 nativecontents |= CONTENTSQ3_BODY;
5893         if (supercontents & SUPERCONTENTS_CORPSE)
5894                 nativecontents |= CONTENTSQ3_CORPSE;
5895         if (supercontents & SUPERCONTENTS_NODROP)
5896                 nativecontents |= CONTENTSQ3_NODROP;
5897         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5898                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5899         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5900                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5901         if (supercontents & SUPERCONTENTS_DONOTENTER)
5902                 nativecontents |= CONTENTSQ3_DONOTENTER;
5903         return nativecontents;
5904 }
5905
5906 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5907 {
5908         int numleafs;
5909         while (node->plane)
5910         {
5911                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5912                 node = node->children[1];
5913         }
5914         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5915         if (loadmodel->brush.num_leafs < numleafs)
5916                 loadmodel->brush.num_leafs = numleafs;
5917 }
5918
5919 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5920 {
5921         int i, j, numshadowmeshtriangles;
5922         q3dheader_t *header;
5923         float corner[3], yawradius, modelradius;
5924         msurface_t *surface;
5925
5926         mod->type = mod_brushq3;
5927         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5928         mod->numskins = 1;
5929
5930         header = (q3dheader_t *)buffer;
5931
5932         i = LittleLong(header->version);
5933         if (i != Q3BSPVERSION)
5934                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5935         mod->brush.ishlbsp = false;
5936         mod->brush.ismcbsp = false;
5937         if (loadmodel->isworldmodel)
5938         {
5939                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5940                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5941         }
5942
5943         mod->soundfromcenter = true;
5944         mod->TraceBox = Mod_Q3BSP_TraceBox;
5945         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
5946         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5947         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5948         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5949         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5950         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5951         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5952         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5953         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5954         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5955         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5956         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5957         mod->Draw = R_Q1BSP_Draw;
5958         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5959         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5960         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5961         mod->DrawLight = R_Q1BSP_DrawLight;
5962
5963         mod_base = (unsigned char *)header;
5964
5965         // swap all the lumps
5966         header->ident = LittleLong(header->ident);
5967         header->version = LittleLong(header->version);
5968         for (i = 0;i < Q3HEADER_LUMPS;i++)
5969         {
5970                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5971                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5972         }
5973
5974         mod->brush.qw_md4sum = 0;
5975         mod->brush.qw_md4sum2 = 0;
5976         for (i = 0;i < Q3HEADER_LUMPS;i++)
5977         {
5978                 if (i == Q3LUMP_ENTITIES)
5979                         continue;
5980                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5981                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5982                         continue;
5983                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5984         }
5985
5986         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5987         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5988         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5989         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5990         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5991         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5992         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5993         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5994         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
5995         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5996         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5997         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5998         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5999         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6000         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6001         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6002         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6003         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6004
6005         // the MakePortals code works fine on the q3bsp data as well
6006         Mod_Q1BSP_MakePortals();
6007
6008         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6009         loadmodel->brush.supportwateralpha = true;
6010
6011         // make a single combined shadow mesh to allow optimized shadow volume creation
6012         numshadowmeshtriangles = 0;
6013         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6014         {
6015                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6016                 numshadowmeshtriangles += surface->num_triangles;
6017         }
6018         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6019         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6020                 if (surface->num_triangles > 0)
6021                         Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
6022         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6023         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6024
6025         loadmodel->brush.num_leafs = 0;
6026         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6027
6028         if (loadmodel->isworldmodel)
6029         {
6030                 // clear out any stale submodels or worldmodels lying around
6031                 // if we did this clear before now, an error might abort loading and
6032                 // leave things in a bad state
6033                 Mod_RemoveStaleWorldModels(loadmodel);
6034         }
6035
6036         mod = loadmodel;
6037         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6038         {
6039                 if (i > 0)
6040                 {
6041                         char name[10];
6042                         // LordHavoc: only register submodels if it is the world
6043                         // (prevents external bsp models from replacing world submodels with
6044                         //  their own)
6045                         if (!loadmodel->isworldmodel)
6046                                 continue;
6047                         // duplicate the basic information
6048                         sprintf(name, "*%i", i);
6049                         mod = Mod_FindName(name);
6050                         *mod = *loadmodel;
6051                         strlcpy(mod->name, name, sizeof(mod->name));
6052                         // textures and memory belong to the main model
6053                         mod->texturepool = NULL;
6054                         mod->mempool = NULL;
6055                         mod->brush.TraceLineOfSight = NULL;
6056                         mod->brush.GetPVS = NULL;
6057                         mod->brush.FatPVS = NULL;
6058                         mod->brush.BoxTouchingPVS = NULL;
6059                         mod->brush.BoxTouchingLeafPVS = NULL;
6060                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6061                         mod->brush.FindBoxClusters = NULL;
6062                         mod->brush.LightPoint = NULL;
6063                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6064                 }
6065                 mod->brush.submodel = i;
6066
6067                 // make the model surface list (used by shadowing/lighting)
6068                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6069                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6070                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6071                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6072                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
6073                 for (j = 0;j < mod->nummodelsurfaces;j++)
6074                         mod->surfacelist[j] = mod->firstmodelsurface + j;
6075
6076                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6077                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6078                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6079                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6080                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6081                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6082                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6083                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6084                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6085                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6086                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6087                 mod->yawmins[2] = mod->normalmins[2];
6088                 mod->yawmaxs[2] = mod->normalmaxs[2];
6089                 mod->radius = modelradius;
6090                 mod->radius2 = modelradius * modelradius;
6091
6092                 for (j = 0;j < mod->nummodelsurfaces;j++)
6093                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
6094                                 break;
6095                 if (j < mod->nummodelsurfaces)
6096                         mod->DrawSky = R_Q1BSP_DrawSky;
6097                 else
6098                         mod->DrawSky = NULL;
6099         }
6100 }
6101
6102 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
6103 {
6104         int i = LittleLong(((int *)buffer)[1]);
6105         if (i == Q3BSPVERSION)
6106                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6107         else if (i == Q2BSPVERSION)
6108                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6109         else
6110                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6111 }
6112
6113 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
6114 {
6115         Host_Error("Mod_MAP_Load: not yet implemented");
6116 }
6117
6118 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
6119 {
6120         // we already have done PVS culling at this point...
6121         // so we don't need to do it again.
6122
6123         int i;
6124         vec3_t testorigin, mins, maxs;
6125
6126         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
6127         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
6128         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
6129
6130         if(model->brush.TraceLineOfSight(model, eye, testorigin))
6131                 return 1;
6132
6133         // expand the box a little
6134         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
6135         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
6136         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
6137         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
6138         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
6139         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
6140
6141         for(i = 0; i != numsamples; ++i)
6142         {
6143                 testorigin[0] = lhrandom(mins[0], maxs[0]);
6144                 testorigin[1] = lhrandom(mins[1], maxs[1]);
6145                 testorigin[2] = lhrandom(mins[2], maxs[2]);
6146
6147                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
6148                         return 1;
6149         }
6150
6151         return 0;
6152 }
6153